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    —— (8R)-8-hydroxy-6-methylidene-5,7-dihydropyrrolizin-3-one —— C8H9NO2
    (8R)-8-hydroxy-6-methylidene-5,7-dihydropyrrolizin-3-one
    —— (8S)-8-hydroxy-6-methylidene-5,7-dihydropyrrolizin-3-one —— C8H9NO2
    (8S)-8-hydroxy-6-methylidene-5,7-dihydropyrrolizin-3-one
    —— (8S)-2-amino-8-hydroxy-1,7,8,9-tetrahydropurin-6-one —— C5H7N5O2
    (8S)-2-amino-8-hydroxy-1,7,8,9-tetrahydropurin-6-one
    —— (8R)-2-amino-8-hydroxy-1,7,8,9-tetrahydropurin-6-one —— C5H7N5O2
    (8R)-2-amino-8-hydroxy-1,7,8,9-tetrahydropurin-6-one
    —— (8R)-8-chlorocyclooct-2-en-1-one —— C8H11ClO
    (8R)-8-chlorocyclooct-2-en-1-one
    —— (8S,8aS)-8a-ethyl-8-methyl-6,8-dihydro-5H-[1,3]thiazolo[2,3-c][1,4]thiazine-3-thione —— C9H15NS3
    (8S,8aS)-8a-ethyl-8-methyl-6,8-dihydro-5H-[1,3]thiazolo[2,3-c][1,4]thiazine-3-thione
    —— (8S)-8-chlorocyclooct-2-en-1-one —— C8H11ClO
    (8S)-8-chlorocyclooct-2-en-1-one
    —— (8R)-8-chlorodispiro[2.0.24.23]octan-7-one —— C8H9ClO
    (8R)-8-chlorodispiro[2.0.24.23]octan-7-one
    —— (8R,8aR)-8a-ethyl-8-methyl-6,8-dihydro-5H-[1,3]thiazolo[2,3-c][1,4]thiazine-3-thione —— C9H15NS3
    (8R,8aR)-8a-ethyl-8-methyl-6,8-dihydro-5H-[1,3]thiazolo[2,3-c][1,4]thiazine-3-thione
    —— (8S)-8-chlorocyclooct-4-en-1-one —— C8H11ClO
    (8S)-8-chlorocyclooct-4-en-1-one
    —— (8S)-8-chlorodispiro[2.0.24.23]octan-7-one —— C8H9ClO
    (8S)-8-chlorodispiro[2.0.24.23]octan-7-one
    —— 8-[(2S)-3-chloro-2-hydroxypropoxy]-2,3-dimethylquinazolin-4-one —— C13H15ClN2O3
    8-[(2S)-3-chloro-2-hydroxypropoxy]-2,3-dimethylquinazolin-4-one
    —— (8S,8aR)-8a-ethyl-8-methyl-6,8-dihydro-5H-[1,3]thiazolo[2,3-c][1,4]thiazine-3-thione —— C9H15NS3
    (8S,8aR)-8a-ethyl-8-methyl-6,8-dihydro-5H-[1,3]thiazolo[2,3-c][1,4]thiazine-3-thione
    —— (8aR)-2,5,6,7,8,8a-hexahydro-1H-indolizine-3-thione —— C8H13NS
    (8aR)-2,5,6,7,8,8a-hexahydro-1H-indolizine-3-thione
    —— (8R,8aS)-8a-ethyl-8-methyl-6,8-dihydro-5H-[1,3]thiazolo[2,3-c][1,4]thiazine-3-thione —— C9H15NS3
    (8R,8aS)-8a-ethyl-8-methyl-6,8-dihydro-5H-[1,3]thiazolo[2,3-c][1,4]thiazine-3-thione
    —— 8-methoxy-3-(4-methoxyphenyl)-2-[(1R)-1-(methylamino)ethyl]quinazolin-4-one —— C19H21N3O3
    8-methoxy-3-(4-methoxyphenyl)-2-[(1R)-1-(methylamino)ethyl]quinazolin-4-one
    —— 8-[(2R)-3-chloro-2-hydroxypropoxy]-2,3-dimethylquinazolin-4-one —— C13H15ClN2O3
    8-[(2R)-3-chloro-2-hydroxypropoxy]-2,3-dimethylquinazolin-4-one
    —— (8aS)-2,5,6,7,8,8a-hexahydro-1H-indolizine-3-thione —— C8H13NS
    (8aS)-2,5,6,7,8,8a-hexahydro-1H-indolizine-3-thione
    —— 8-[(2S)-2-hydroxy-3-(propan-2-ylamino)propoxy]-2,3-dimethylquinazolin-4-one —— C16H23N3O3
    8-[(2S)-2-hydroxy-3-(propan-2-ylamino)propoxy]-2,3-dimethylquinazolin-4-one
    —— (8aR)-4-hydroxy-8,8a-dihydro-1H-azeto[1,2-a]indol-2-one —— C10H9NO2
    (8aR)-4-hydroxy-8,8a-dihydro-1H-azeto[1,2-a]indol-2-one
    —— (8aS)-4-hydroxy-8,8a-dihydro-1H-azeto[1,2-a]indol-2-one —— C10H9NO2
    (8aS)-4-hydroxy-8,8a-dihydro-1H-azeto[1,2-a]indol-2-one
    —— (8aS)-4,7,8,8a-tetrahydropyrrolo[1,2-a]pyrazine-1,3,6-trione —— C7H8N2O3
    (8aS)-4,7,8,8a-tetrahydropyrrolo[1,2-a]pyrazine-1,3,6-trione
    —— (8aR)-1,2,5,6,7,8a-hexahydroindolizine-3,8-dione —— C8H11NO2
    (8aR)-1,2,5,6,7,8a-hexahydroindolizine-3,8-dione
    —— (8aS)-1,2,5,8a-tetrahydroindolizine-3,8-dione —— C8H9NO2
    (8aS)-1,2,5,8a-tetrahydroindolizine-3,8-dione
    —— (8aR)-8a-prop-2-enyl-1,2,3,5,6,7-hexahydroindolizin-8-one —— C11H17NO
    (8aR)-8a-prop-2-enyl-1,2,3,5,6,7-hexahydroindolizin-8-one
    —— (8aR)-2-ethyl-3,4,6,7,8,8a-hexahydropyrrolo[1,2-a]pyrazin-1-one —— C9H16N2O
    (8aR)-2-ethyl-3,4,6,7,8,8a-hexahydropyrrolo[1,2-a]pyrazin-1-one
    —— (8aR)-8a-methyl-1,2,3,5,6,7-hexahydroindolizin-8-one —— C9H15NO
    (8aR)-8a-methyl-1,2,3,5,6,7-hexahydroindolizin-8-one
    —— (8aR)-1,2,7,8a-tetrahydroindolizine-3,8-dione —— C8H9NO2
    (8aR)-1,2,7,8a-tetrahydroindolizine-3,8-dione
    —— (8aR)-4,7,8,8a-tetrahydropyrrolo[1,2-a]pyrazine-1,3,6-trione —— C7H8N2O3
    (8aR)-4,7,8,8a-tetrahydropyrrolo[1,2-a]pyrazine-1,3,6-trione
    —— (8aS)-2-ethyl-3,4,6,7,8,8a-hexahydropyrrolo[1,2-a]pyrazin-1-one —— C9H16N2O
    (8aS)-2-ethyl-3,4,6,7,8,8a-hexahydropyrrolo[1,2-a]pyrazin-1-one
    —— (8aR)-1,2,5,8a-tetrahydroindolizine-3,8-dione —— C8H9NO2
    (8aR)-1,2,5,8a-tetrahydroindolizine-3,8-dione
    —— (8aS)-8a-methyl-1,2,3,5,6,7-hexahydroindolizin-8-one —— C9H15NO
    (8aS)-8a-methyl-1,2,3,5,6,7-hexahydroindolizin-8-one
    —— (8aS)-1,2,5,6,7,8a-hexahydroindolizine-3,8-dione —— C8H11NO2
    (8aS)-1,2,5,6,7,8a-hexahydroindolizine-3,8-dione
    —— (8R,8aR)-3,3,8-trimethyl-2,5,6,7,8,8a-hexahydroimidazo[1,5-a]pyrazin-1-one —— C9H17N3O
    (8R,8aR)-3,3,8-trimethyl-2,5,6,7,8,8a-hexahydroimidazo[1,5-a]pyrazin-1-one
    —— (8S,8aR)-3,3,8-trimethyl-2,5,6,7,8,8a-hexahydroimidazo[1,5-a]pyrazin-1-one —— C9H17N3O
    (8S,8aR)-3,3,8-trimethyl-2,5,6,7,8,8a-hexahydroimidazo[1,5-a]pyrazin-1-one
    —— (8aR)-2,3,3-trimethyl-6,7,8,8a-tetrahydro-5H-imidazo[1,5-a]pyrazin-1-one —— C9H17N3O
    (8aR)-2,3,3-trimethyl-6,7,8,8a-tetrahydro-5H-imidazo[1,5-a]pyrazin-1-one
    —— (8aS)-2-ethyl-7-methyl-5,6,8,8a-tetrahydro-1H-imidazo[1,5-a]pyrazin-3-one —— C9H17N3O
    (8aS)-2-ethyl-7-methyl-5,6,8,8a-tetrahydro-1H-imidazo[1,5-a]pyrazin-3-one
    —— (8S,8aS)-3,3,8-trimethyl-2,5,6,7,8,8a-hexahydroimidazo[1,5-a]pyrazin-1-one —— C9H17N3O
    (8S,8aS)-3,3,8-trimethyl-2,5,6,7,8,8a-hexahydroimidazo[1,5-a]pyrazin-1-one
    —— (8aS)-2,7-dimethyl-5,6,8,8a-tetrahydro-1H-imidazo[1,5-a]pyrazin-3-one —— C8H15N3O
    (8aS)-2,7-dimethyl-5,6,8,8a-tetrahydro-1H-imidazo[1,5-a]pyrazin-3-one
    —— (8R,8aS)-3,3,8-trimethyl-2,5,6,7,8,8a-hexahydroimidazo[1,5-a]pyrazin-1-one —— C9H17N3O
    (8R,8aS)-3,3,8-trimethyl-2,5,6,7,8,8a-hexahydroimidazo[1,5-a]pyrazin-1-one
    —— (8aR)-2-ethyl-7-methyl-5,6,8,8a-tetrahydro-1H-imidazo[1,5-a]pyrazin-3-one —— C9H17N3O
    (8aR)-2-ethyl-7-methyl-5,6,8,8a-tetrahydro-1H-imidazo[1,5-a]pyrazin-3-one
    —— (8aS)-7-methyl-5,6,8,8a-tetrahydro-1H-[1,3]oxazolo[3,4-a]pyrazin-3-one —— C7H12N2O2
    (8aS)-7-methyl-5,6,8,8a-tetrahydro-1H-[1,3]oxazolo[3,4-a]pyrazin-3-one
    —— (8aS)-1,3,5,6,7,8a-hexahydro-[1,3]thiazolo[3,4-a]pyrazin-8-one —— C6H10N2OS
    (8aS)-1,3,5,6,7,8a-hexahydro-[1,3]thiazolo[3,4-a]pyrazin-8-one
    —— (8aR)-1,3,5,6,7,8a-hexahydro-[1,3]thiazolo[3,4-a]pyrazin-8-one —— C6H10N2OS
    (8aR)-1,3,5,6,7,8a-hexahydro-[1,3]thiazolo[3,4-a]pyrazin-8-one
    —— (8aR)-7-methyl-1,2,5,6,8,8a-hexahydroimidazo[1,5-a]pyrazin-3-one —— C7H13N3O
    (8aR)-7-methyl-1,2,5,6,8,8a-hexahydroimidazo[1,5-a]pyrazin-3-one
    —— (8R,9aR)-2,3,4,6,7,8,9,9a-octahydro-1H-pyrido[1,2-a]pyrazin-8-ol —— C8H16N2O
    (8R,9aR)-2,3,4,6,7,8,9,9a-octahydro-1H-pyrido[1,2-a]pyrazin-8-ol
    —— (8aS)-7-methyl-1,2,5,6,8,8a-hexahydroimidazo[1,5-a]pyrazin-3-one —— C7H13N3O
    (8aS)-7-methyl-1,2,5,6,8,8a-hexahydroimidazo[1,5-a]pyrazin-3-one
    —— (8R,9aS)-2,3,4,6,7,8,9,9a-octahydro-1H-pyrido[1,2-a]pyrazin-8-ol —— C8H16N2O
    (8R,9aS)-2,3,4,6,7,8,9,9a-octahydro-1H-pyrido[1,2-a]pyrazin-8-ol
    —— (8aR)-3,3-dimethyl-1,5,6,7,8,8a-hexahydro-[1,3]oxazolo[3,4-a]pyrazine —— C8H16N2O
    (8aR)-3,3-dimethyl-1,5,6,7,8,8a-hexahydro-[1,3]oxazolo[3,4-a]pyrazine
    —— (8aS)-3,3-dimethyl-1,5,6,7,8,8a-hexahydro-[1,3]oxazolo[3,4-a]pyrazine —— C8H16N2O
    (8aS)-3,3-dimethyl-1,5,6,7,8,8a-hexahydro-[1,3]oxazolo[3,4-a]pyrazine