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    首页 分子通 按分子结构分类 有机化合物 苯丙烷和聚酮 2-芳基苯并呋喃类黄酮

    2-芳基苯并呋喃类黄酮

    中文名称 英文名称 CAS号 化学式 结构式图片
    —— [2-(3,4-dihydroxyphenyl)-3,5-dihydroxy-8-(4-hydroxyphenyl)-4-oxo-4H-furo[2,3-h]chromen-9-yl]acetic acid —— C25H16O10
    [2-(3,4-dihydroxyphenyl)-3,5-dihydroxy-8-(4-hydroxyphenyl)-4-oxo-4H-furo[2,3-h]chromen-9-yl]acetic acid
    —— 7'-(3,4-Dihydroxyphenyl)-4,4',6,6'-tetrahydroxy-2'-(4-hydroxyphenyl)spiro[1-benzofuran-2,3'-2,5,6,7-tetrahydrofuro[3,2-g]chromene]-3-one —— C30H22O11
    7'-(3,4-Dihydroxyphenyl)-4,4',6,6'-tetrahydroxy-2'-(4-hydroxyphenyl)spiro[1-benzofuran-2,3'-2,5,6,7-tetrahydrofuro[3,2-g]chromene]-3-one
    —— 3-[3-(3,5-dihydroxyphenyl)-6-hydroxy-2-(4-hydroxyphenyl)-2,3-dihydro-1-benzofuran-4-yl]-6-[[2-[3-(3,5-dihydroxyphenyl)-6-hydroxy-2-(4-hydroxyphenyl)-2,3-dihydro-1-benzofuran-4-yl]-4,6-dihydroxy-3-(4-hydroxyphenyl)-2,3-dihydro-1H-inden-1-yl]-(4-hydroxyphenyl)methyl]-2,9,17-tris(4-hydroxyphenyl)-8-oxapentacyclo[8.7.2.04,18.07,19.011,16]nonadeca-4(18),5,7(19),11(16),12,14-hexaene-5,13,15-triol —— C98H74O21
    3-[3-(3,5-dihydroxyphenyl)-6-hydroxy-2-(4-hydroxyphenyl)-2,3-dihydro-1-benzofuran-4-yl]-6-[[2-[3-(3,5-dihydroxyphenyl)-6-hydroxy-2-(4-hydroxyphenyl)-2,3-dihydro-1-benzofuran-4-yl]-4,6-dihydroxy-3-(4-hydroxyphenyl)-2,3-dihydro-1H-inden-1-yl]-(4-hydroxyphenyl)methyl]-2,9,17-tris(4-hydroxyphenyl)-8-oxapentacyclo[8.7.2.04,18.07,19.011,16]nonadeca-4(18),5,7(19),11(16),12,14-hexaene-5,13,15-triol
    —— moracin P 102841-46-3 C19H18O5
    moracin P
    —— Ethyl 5-[(4-fluorophenyl)methoxy]-2-(4-methoxyphenyl)-1-benzofuran-3-carboxylate 384352-21-0 C25H21FO5
    Ethyl 5-[(4-fluorophenyl)methoxy]-2-(4-methoxyphenyl)-1-benzofuran-3-carboxylate
    —— 3-(3,5-Dihydroxyphenyl)-14,16-dihydroxy-4,10,18-tris(4-hydroxyphenyl)-5,9-dioxapentacyclo[9.8.1.02,6.08,20.012,17]icosa-1(20),2(6),7,10,12(17),13,15-heptaen-19-one —— C42H28O10
    3-(3,5-Dihydroxyphenyl)-14,16-dihydroxy-4,10,18-tris(4-hydroxyphenyl)-5,9-dioxapentacyclo[9.8.1.02,6.08,20.012,17]icosa-1(20),2(6),7,10,12(17),13,15-heptaen-19-one
    —— 1-[2-[2-(4-Hydroxy-3-methoxyphenyl)-3-(hydroxymethyl)-7-methoxy-2,3-dihydro-1-benzofuran-5-yl]ethyl]-7-methoxy-1,2,3,4-tetrahydroisoquinolin-6-ol —— C29H33NO7
    1-[2-[2-(4-Hydroxy-3-methoxyphenyl)-3-(hydroxymethyl)-7-methoxy-2,3-dihydro-1-benzofuran-5-yl]ethyl]-7-methoxy-1,2,3,4-tetrahydroisoquinolin-6-ol
    —— 2-[4-[7-Hydroxy-3-(hydroxymethyl)-5-(3-hydroxypropyl)-2,3-dihydro-1-benzofuran-2-yl]-2-methoxyphenoxy]oxane-3,4,5-triol —— C24H30O10
    2-[4-[7-Hydroxy-3-(hydroxymethyl)-5-(3-hydroxypropyl)-2,3-dihydro-1-benzofuran-2-yl]-2-methoxyphenoxy]oxane-3,4,5-triol
    —— 22-(3,5-Dihydroxyphenyl)-12,17-dihydroxy-8,21,26,27-tetrakis(4-hydroxyphenyl)-9,20-dioxaoctacyclo[13.10.1.13,25.17,10.01,6.016,24.019,23.014,28]octacosa-5,10,12,14(28),16(24),17,19(23)-heptaene-2,4-dione —— C56H40O12
    22-(3,5-Dihydroxyphenyl)-12,17-dihydroxy-8,21,26,27-tetrakis(4-hydroxyphenyl)-9,20-dioxaoctacyclo[13.10.1.13,25.17,10.01,6.016,24.019,23.014,28]octacosa-5,10,12,14(28),16(24),17,19(23)-heptaene-2,4-dione
    —— 8-(4-Hydroxyphenyl)-4-[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-16-[4-[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyphenyl]-15-oxatetracyclo[8.6.1.02,7.014,17]heptadeca-2(7),3,5,10(17),11,13-hexaene-6,9,12-triol —— C40H42O17
    8-(4-Hydroxyphenyl)-4-[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-16-[4-[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyphenyl]-15-oxatetracyclo[8.6.1.02,7.014,17]heptadeca-2(7),3,5,10(17),11,13-hexaene-6,9,12-triol
    —— Viniferol D 130518-20-6 C42H32O9
    Viniferol D
    —— methyl [8-(biphenyl-4-yl)-2-(3,4-dihydroxyphenyl)-3,5-dihydroxy-4-oxo-4H-furo[2,3-h]chromen-9-yl]acetate —— C32H22O9
    methyl [8-(biphenyl-4-yl)-2-(3,4-dihydroxyphenyl)-3,5-dihydroxy-4-oxo-4H-furo[2,3-h]chromen-9-yl]acetate
    —— 2-(Hydroxymethyl)-6-[4-[3-(hydroxymethyl)-7-methoxy-5-(3-methoxyprop-1-enyl)-2,3-dihydro-1-benzofuran-2-yl]-2-methoxyphenoxy]oxane-3,4,5-triol —— C27H34O11
    2-(Hydroxymethyl)-6-[4-[3-(hydroxymethyl)-7-methoxy-5-(3-methoxyprop-1-enyl)-2,3-dihydro-1-benzofuran-2-yl]-2-methoxyphenoxy]oxane-3,4,5-triol
    —— Ethyl 5-(benzoyloxy)-2-phenyl-1-benzofuran-3-carboxylate —— C24H18O5
    Ethyl 5-(benzoyloxy)-2-phenyl-1-benzofuran-3-carboxylate
    —— 4-[5-(3-Hydroxyprop-1-enyl)-3-methoxy-2,3-dihydro-1-benzofuran-2-yl]-2-methoxyphenol —— C19H20O5
    4-[5-(3-Hydroxyprop-1-enyl)-3-methoxy-2,3-dihydro-1-benzofuran-2-yl]-2-methoxyphenol
    —— [6-(4-Hydroxy-3-methoxyphenyl)furo[2,3-f][1,3]benzodioxol-7-yl]acetic acid —— C18H14O7
    [6-(4-Hydroxy-3-methoxyphenyl)furo[2,3-f][1,3]benzodioxol-7-yl]acetic acid
    —— 5-(6-Hydroxy-1-benzofuran-2-yl)-2-[(3-hydroxy-2,2-dimethyl-6-methylidenecyclohexyl)methyl]benzene-1,3-diol —— C24H26O5
    5-(6-Hydroxy-1-benzofuran-2-yl)-2-[(3-hydroxy-2,2-dimethyl-6-methylidenecyclohexyl)methyl]benzene-1,3-diol
    —— 2-(4-Hydroxy-3-methoxyphenyl)-3-methyl-5-prop-1-enyl-2,3-dihydro-1-benzofuran-7-ol —— C19H20O4
    2-(4-Hydroxy-3-methoxyphenyl)-3-methyl-5-prop-1-enyl-2,3-dihydro-1-benzofuran-7-ol
    —— [3'-[(2-amino-3-ethyl-1,2-dihydropyridin-5-yl)methyl]-7-hydroxy-2-(4-hydroxy-3-methoxyphenyl)-9-methoxyspiro[2,5-dihydro-1H-naphtho[1,2-g][1]benzofuran-4,1'-cyclopentane]-1-yl]methyl acetate —— C39H44N2O7
    [3'-[(2-amino-3-ethyl-1,2-dihydropyridin-5-yl)methyl]-7-hydroxy-2-(4-hydroxy-3-methoxyphenyl)-9-methoxyspiro[2,5-dihydro-1H-naphtho[1,2-g][1]benzofuran-4,1'-cyclopentane]-1-yl]methyl acetate
    —— 3-[3-[(4-Hydroxybenzoyl)oxymethyl]-2-(4-hydroxy-3-methoxyphenyl)-7-methoxy-2,3-dihydro-1-benzofuran-5-yl]prop-2-enyl 4-hydroxybenzoate —— C34H30O10
    3-[3-[(4-Hydroxybenzoyl)oxymethyl]-2-(4-hydroxy-3-methoxyphenyl)-7-methoxy-2,3-dihydro-1-benzofuran-5-yl]prop-2-enyl 4-hydroxybenzoate
    —— 5-[7-Hydroxy-5-[4-hydroxy-6-[4-hydroxy-2-(4-hydroxyphenyl)-6-[2-(4-hydroxyphenyl)ethenyl]-2,3-dihydro-1-benzofuran-3-yl]-2-(4-hydroxyphenyl)-2,3-dihydro-1-benzofuran-3-yl]-3-(4-hydroxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]benzene-1,3-diol —— C56H42O12
    5-[7-Hydroxy-5-[4-hydroxy-6-[4-hydroxy-2-(4-hydroxyphenyl)-6-[2-(4-hydroxyphenyl)ethenyl]-2,3-dihydro-1-benzofuran-3-yl]-2-(4-hydroxyphenyl)-2,3-dihydro-1-benzofuran-3-yl]-3-(4-hydroxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]benzene-1,3-diol
    —— Dehydro-triconiferylalkohol 106248-01-5 C30H32O9
    Dehydro-triconiferylalkohol
    —— 16-[3-[3-(3,5-Dihydroxyphenyl)-6-hydroxy-2-(4-hydroxyphenyl)-2,3-dihydro-1-benzofuran-4-yl]-5,13,15-trihydroxy-2,9,17-tris(4-hydroxyphenyl)-8-oxapentacyclo[8.7.2.04,18.07,19.011,16]nonadeca-4(18),5,7(19),11(16),12,14-hexaen-6-yl]-1,8-bis(4-hydroxyphenyl)-17-oxatetracyclo[7.7.1.02,7.010,15]heptadeca-2(7),3,5,10(15),11,13-hexaene-4,6,12,14-tetrol —— C84H62O19
    16-[3-[3-(3,5-Dihydroxyphenyl)-6-hydroxy-2-(4-hydroxyphenyl)-2,3-dihydro-1-benzofuran-4-yl]-5,13,15-trihydroxy-2,9,17-tris(4-hydroxyphenyl)-8-oxapentacyclo[8.7.2.04,18.07,19.011,16]nonadeca-4(18),5,7(19),11(16),12,14-hexaen-6-yl]-1,8-bis(4-hydroxyphenyl)-17-oxatetracyclo[7.7.1.02,7.010,15]heptadeca-2(7),3,5,10(15),11,13-hexaene-4,6,12,14-tetrol
    —— [3'-[(6-aminopyridin-3-yl)methyl]-7-hydroxy-9-(hydroxymethoxy)-2-[4-hydroxy-3-[2-(methylamino)ethoxy]phenyl]spiro[2,5-dihydro-1H-naphtho[1,2-g][1]benzofuran-4,1'-cyclopentane]-1-yl]methyl acetate —— C39H43N3O8
    [3'-[(6-aminopyridin-3-yl)methyl]-7-hydroxy-9-(hydroxymethoxy)-2-[4-hydroxy-3-[2-(methylamino)ethoxy]phenyl]spiro[2,5-dihydro-1H-naphtho[1,2-g][1]benzofuran-4,1'-cyclopentane]-1-yl]methyl acetate
    —— 3-[2-(3,4-Dihydroxyphenyl)-7-hydroxy-3-(hydroxymethyl)-2,3-dihydro-1-benzofuran-5-yl]prop-2-enoic acid —— C18H16O7
    3-[2-(3,4-Dihydroxyphenyl)-7-hydroxy-3-(hydroxymethyl)-2,3-dihydro-1-benzofuran-5-yl]prop-2-enoic acid
    —— 2-[3-(3,5-Dihydroxyphenyl)-6-hydroxy-2-(4-hydroxyphenyl)-2,3-dihydro-1-benzofuran-4-yl]-3,9,17-tris(4-hydroxyphenyl)-8-oxapentacyclo[8.7.2.04,18.07,19.011,16]nonadeca-4(18),5,7(19),11(16),12,14-hexaene-5,13,15-triol —— C56H42O12
    2-[3-(3,5-Dihydroxyphenyl)-6-hydroxy-2-(4-hydroxyphenyl)-2,3-dihydro-1-benzofuran-4-yl]-3,9,17-tris(4-hydroxyphenyl)-8-oxapentacyclo[8.7.2.04,18.07,19.011,16]nonadeca-4(18),5,7(19),11(16),12,14-hexaene-5,13,15-triol
    —— [2-(Furan-2-ylmethylidene)-3-oxo-1-benzofuran-6-yl] 5-ethoxy-2-phenyl-1-benzofuran-3-carboxylate —— C30H20O7
    [2-(Furan-2-ylmethylidene)-3-oxo-1-benzofuran-6-yl] 5-ethoxy-2-phenyl-1-benzofuran-3-carboxylate
    —— 4-[5-(3-Hydroxypropyl)-3-methyl-2,3-dihydro-1-benzofuran-2-yl]-2-methoxyphenol —— C19H22O4
    4-[5-(3-Hydroxypropyl)-3-methyl-2,3-dihydro-1-benzofuran-2-yl]-2-methoxyphenol
    —— 4-(2,4-Dihydroxyphenyl)-9-(2-hydroxypropan-2-yl)-4,10-dimethoxy-14,14-dimethyl-3,8,13-trioxatetracyclo[10.4.0.02,6.07,11]hexadeca-1(12),2(6),7(11),15-tetraen-5-one —— C26H28O9
    4-(2,4-Dihydroxyphenyl)-9-(2-hydroxypropan-2-yl)-4,10-dimethoxy-14,14-dimethyl-3,8,13-trioxatetracyclo[10.4.0.02,6.07,11]hexadeca-1(12),2(6),7(11),15-tetraen-5-one
    —— [7-Hydroxy-5-(2-hydroxyethyl)-2-(4-hydroxy-3-methoxyphenyl)-9-methoxy-1,2,4,5-tetrahydronaphtho[1,2-g][1]benzofuran-1-yl]methyl acetate —— C29H30O8
    [7-Hydroxy-5-(2-hydroxyethyl)-2-(4-hydroxy-3-methoxyphenyl)-9-methoxy-1,2,4,5-tetrahydronaphtho[1,2-g][1]benzofuran-1-yl]methyl acetate
    —— [3,9-dihydroxy-4,10-bis(3-methylbut-2-enyl)-6a,11a-dihydro-6H-[1]benzofuro[3,2-c]chromen-8-yl]-[5,6-dihydroxy-2-(2-hydroxy-4-methoxyphenyl)-7-(3-methylbut-2-enyl)-1-benzofuran-3-yl]methanone —— C46H46O10
    [3,9-dihydroxy-4,10-bis(3-methylbut-2-enyl)-6a,11a-dihydro-6H-[1]benzofuro[3,2-c]chromen-8-yl]-[5,6-dihydroxy-2-(2-hydroxy-4-methoxyphenyl)-7-(3-methylbut-2-enyl)-1-benzofuran-3-yl]methanone
    —— 5-(2-chlorobenzyloxy)-2-phenylbenzofuran-3-carboxylic acid ethyl ester —— C24H19ClO4
    5-(2-chlorobenzyloxy)-2-phenylbenzofuran-3-carboxylic acid ethyl ester
    —— 17-(6-Hydroxy-2,3-dihydro-1-benzofuran-2-yl)-1-[(5-hydroxy-2,2-dimethylchromen-8-yl)methyl]-11-methyl-2,20-dioxapentacyclo[11.7.1.03,8.09,21.014,19]henicosa-3(8),4,6,11,14,16,18-heptaene-5,15-diol —— C40H36O8
    17-(6-Hydroxy-2,3-dihydro-1-benzofuran-2-yl)-1-[(5-hydroxy-2,2-dimethylchromen-8-yl)methyl]-11-methyl-2,20-dioxapentacyclo[11.7.1.03,8.09,21.014,19]henicosa-3(8),4,6,11,14,16,18-heptaene-5,15-diol
    —— 1-[2-(4-Hydroxyphenyl)-3-methyl-1-benzofuran-5-yl]propan-2-one —— C18H16O3
    1-[2-(4-Hydroxyphenyl)-3-methyl-1-benzofuran-5-yl]propan-2-one
    —— 5-[5-Hydroxy-7,7-dimethyl-4-(3-methylbut-2-enyl)furo[2,3-f]chromen-2-yl]benzene-1,3-diol —— C24H24O5
    5-[5-Hydroxy-7,7-dimethyl-4-(3-methylbut-2-enyl)furo[2,3-f]chromen-2-yl]benzene-1,3-diol
    —— [3,4,5-Trihydroxy-6-[4-[3-(hydroxymethyl)-5-(3-hydroxypropyl)-7-methoxy-2,3-dihydro-1-benzofuran-2-yl]-2-methoxyphenoxy]oxan-2-yl]methyl 3,4,5-trihydroxybenzoate —— C33H38O15
    [3,4,5-Trihydroxy-6-[4-[3-(hydroxymethyl)-5-(3-hydroxypropyl)-7-methoxy-2,3-dihydro-1-benzofuran-2-yl]-2-methoxyphenoxy]oxan-2-yl]methyl 3,4,5-trihydroxybenzoate
    —— 4-(3,5-Dihydroxyphenyl)-5,11,19-tris(4-hydroxyphenyl)-8,16-bis[[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy]-6-oxapentacyclo[10.7.0.02,10.03,7.013,18]nonadeca-2(10),3(7),8,13,15,17-hexaene-9,15,17-triol —— C54H52O21
    4-(3,5-Dihydroxyphenyl)-5,11,19-tris(4-hydroxyphenyl)-8,16-bis[[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy]-6-oxapentacyclo[10.7.0.02,10.03,7.013,18]nonadeca-2(10),3(7),8,13,15,17-hexaene-9,15,17-triol
    —— 4-[[3-ethoxycarbonyl-2-(4-methoxyphenyl)-1-benzofuran-5-yl]oxycarbonyl]-N-hydroxybenzeneamine oxide —— C25H21NO8
    4-[[3-ethoxycarbonyl-2-(4-methoxyphenyl)-1-benzofuran-5-yl]oxycarbonyl]-N-hydroxybenzeneamine oxide
    —— Ethyl 5-{[(4-bromophenyl)carbonyl]oxy}-2-(4-methoxyphenyl)-1-benzofuran-3-carboxylate —— C25H19BrO6
    Ethyl 5-{[(4-bromophenyl)carbonyl]oxy}-2-(4-methoxyphenyl)-1-benzofuran-3-carboxylate
    —— [2-(3,4-dihydroxyphenyl)-3,5-dihydroxy-8-(3-methoxyphenyl)-4-oxo-4H-furo[2,3-h]chromen-9-yl]acetic acid —— C26H18O10
    [2-(3,4-dihydroxyphenyl)-3,5-dihydroxy-8-(3-methoxyphenyl)-4-oxo-4H-furo[2,3-h]chromen-9-yl]acetic acid
    —— 3-(4-bromophenyl)-4-oxo-4H-chromen-7-yl 5-ethoxy-2-phenyl-1-benzofuran-3-carboxylate —— C32H21BrO6
    3-(4-bromophenyl)-4-oxo-4H-chromen-7-yl 5-ethoxy-2-phenyl-1-benzofuran-3-carboxylate
    —— Ethyl 5-[2-(4-bromophenyl)-2-oxoethoxy]-2-phenyl-1-benzofuran-3-carboxylate —— C25H19BrO5
    Ethyl 5-[2-(4-bromophenyl)-2-oxoethoxy]-2-phenyl-1-benzofuran-3-carboxylate
    —— 5-methoxy-2-(4-methoxyphenyl)-N-(2-methylphenyl)-1-benzofuran-3-carboxamide —— C24H21NO4
    5-methoxy-2-(4-methoxyphenyl)-N-(2-methylphenyl)-1-benzofuran-3-carboxamide
    —— Moracin G 73338-86-0 C19H16O4
    Moracin G
    —— Ethyl 6-bromo-5-[(2-bromobenzyl)oxy]-2-phenyl-1-benzofuran-3-carboxylate —— C24H18Br2O4
    Ethyl 6-bromo-5-[(2-bromobenzyl)oxy]-2-phenyl-1-benzofuran-3-carboxylate
    —— 4-[3-[3-(3,5-Dihydroxyphenyl)-4-hydroxy-2-(4-hydroxyphenyl)-2,3-dihydro-1-benzofuran-6-yl]-4-hydroxy-6-[2-(4-hydroxyphenyl)ethenyl]-2,3-dihydro-1-benzofuran-2-yl]benzene-1,3-diol —— C42H32O10
    4-[3-[3-(3,5-Dihydroxyphenyl)-4-hydroxy-2-(4-hydroxyphenyl)-2,3-dihydro-1-benzofuran-6-yl]-4-hydroxy-6-[2-(4-hydroxyphenyl)ethenyl]-2,3-dihydro-1-benzofuran-2-yl]benzene-1,3-diol
    —— 7-Hydroxy-3-(hydroxymethyl)-2-[3-methoxy-4-[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyphenyl]-2,3-dihydro-1-benzofuran-5-carbaldehyde —— C23H26O11
    7-Hydroxy-3-(hydroxymethyl)-2-[3-methoxy-4-[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyphenyl]-2,3-dihydro-1-benzofuran-5-carbaldehyde
    —— Ethyl 5-{[2-(4-ethoxy-2,3,5,6-tetrafluorophenoxy)propanoyl]oxy}-2-phenyl-1-benzofuran-3-carboxylate —— C28H22F4O7
    Ethyl 5-{[2-(4-ethoxy-2,3,5,6-tetrafluorophenoxy)propanoyl]oxy}-2-phenyl-1-benzofuran-3-carboxylate
    —— 4-[2-[3-[3-(3,5-Dihydroxyphenyl)-4-hydroxy-2-(4-hydroxyphenyl)-2,3-dihydro-1-benzofuran-6-yl]-4-hydroxy-2-(4-hydroxyphenyl)-2,3-dihydro-1-benzofuran-6-yl]ethenyl]benzene-1,3-diol —— C42H32O10
    4-[2-[3-[3-(3,5-Dihydroxyphenyl)-4-hydroxy-2-(4-hydroxyphenyl)-2,3-dihydro-1-benzofuran-6-yl]-4-hydroxy-2-(4-hydroxyphenyl)-2,3-dihydro-1-benzofuran-6-yl]ethenyl]benzene-1,3-diol
    —— (4,9-dimethyl-7-oxo-2-phenyl-7H-furo[2,3-f]chromen-3-yl)acetic acid —— C21H16O5
    (4,9-dimethyl-7-oxo-2-phenyl-7H-furo[2,3-f]chromen-3-yl)acetic acid