摩熵化学
数据库官网
小程序
打开微信扫一扫
首页 分子通 化学资讯 化学百科 反应查询 关于我们
请输入关键词
中文名称 英文名称 CAS号 化学式 结构式图片
—— (6R)-7-cyclopropyl-6-N-[(4-methoxyphenyl)methyl]-6-methyl-1-N-[2-(4-methylphenyl)ethyl]-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide —— C29H33N5O4
(6R)-7-cyclopropyl-6-N-[(4-methoxyphenyl)methyl]-6-methyl-1-N-[2-(4-methylphenyl)ethyl]-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide
—— (6S)-1-N-cyclooctyl-7-cyclopropyl-6-N-[(4-methoxyphenyl)methyl]-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide —— C28H37N5O4
(6S)-1-N-cyclooctyl-7-cyclopropyl-6-N-[(4-methoxyphenyl)methyl]-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide
—— (6S)-7-cyclopropyl-1-N-[(4-fluorophenyl)methyl]-6-methyl-6-N-[(4-methylphenyl)methyl]-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide —— C27H28FN5O3
(6S)-7-cyclopropyl-1-N-[(4-fluorophenyl)methyl]-6-methyl-6-N-[(4-methylphenyl)methyl]-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide
—— (6R)-7-cyclopropyl-1-N-[(4-fluorophenyl)methyl]-6-methyl-6-N-[(4-methylphenyl)methyl]-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide —— C27H28FN5O3
(6R)-7-cyclopropyl-1-N-[(4-fluorophenyl)methyl]-6-methyl-6-N-[(4-methylphenyl)methyl]-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide
—— (6R)-7-cyclopropyl-1-N-(2,5-dimethylphenyl)-6-methyl-8-oxo-6-N-(3-propan-2-yloxypropyl)-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide —— C26H35N5O4
(6R)-7-cyclopropyl-1-N-(2,5-dimethylphenyl)-6-methyl-8-oxo-6-N-(3-propan-2-yloxypropyl)-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide
—— (6S)-6-N-cyclopentyl-7-cyclopropyl-1-N-[(3-fluorophenyl)methyl]-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide —— C24H28FN5O3
(6S)-6-N-cyclopentyl-7-cyclopropyl-1-N-[(3-fluorophenyl)methyl]-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide
—— (6R)-6-N-cyclopentyl-7-cyclopropyl-1-N-[(4-fluorophenyl)methyl]-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide —— C24H28FN5O3
(6R)-6-N-cyclopentyl-7-cyclopropyl-1-N-[(4-fluorophenyl)methyl]-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide
—— (6S)-7-cyclopropyl-6-N-[(4-methoxyphenyl)methyl]-6-methyl-1-N-(3-methylbutyl)-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide —— C25H33N5O4
(6S)-7-cyclopropyl-6-N-[(4-methoxyphenyl)methyl]-6-methyl-1-N-(3-methylbutyl)-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide
—— (6S)-1-N-(3-chloro-4-methylphenyl)-6-N-cyclopentyl-7-cyclopropyl-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide —— C24H28ClN5O3
(6S)-1-N-(3-chloro-4-methylphenyl)-6-N-cyclopentyl-7-cyclopropyl-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide
—— (6S)-6-N-cyclopentyl-7-cyclopropyl-1-N-(2-ethoxyphenyl)-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide —— C25H31N5O4
(6S)-6-N-cyclopentyl-7-cyclopropyl-1-N-(2-ethoxyphenyl)-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide
—— (6R)-7-cyclopropyl-6-N-[(4-methoxyphenyl)methyl]-6-methyl-8-oxo-1-N-(2-phenylethyl)-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide —— C28H31N5O4
(6R)-7-cyclopropyl-6-N-[(4-methoxyphenyl)methyl]-6-methyl-8-oxo-1-N-(2-phenylethyl)-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide
—— (6S)-7-cyclopropyl-6-N-[(4-methoxyphenyl)methyl]-6-methyl-8-oxo-1-N-(2-thiophen-2-ylethyl)-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide —— C26H29N5O4S
(6S)-7-cyclopropyl-6-N-[(4-methoxyphenyl)methyl]-6-methyl-8-oxo-1-N-(2-thiophen-2-ylethyl)-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide
—— (6S)-7-cyclopropyl-6-N-(2-methoxyethyl)-6-methyl-1-N-(4-methylphenyl)-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide —— C22H27N5O4
(6S)-7-cyclopropyl-6-N-(2-methoxyethyl)-6-methyl-1-N-(4-methylphenyl)-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide
—— (6S)-7-cyclopropyl-1-N-(2,4-dimethylphenyl)-6-N-(2-methoxyethyl)-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide —— C23H29N5O4
(6S)-7-cyclopropyl-1-N-(2,4-dimethylphenyl)-6-N-(2-methoxyethyl)-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide
—— (6S)-1-N-cyclohexyl-7-cyclopropyl-6-N-[(4-methoxyphenyl)methyl]-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide —— C26H33N5O4
(6S)-1-N-cyclohexyl-7-cyclopropyl-6-N-[(4-methoxyphenyl)methyl]-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide
—— (6S)-6-N-cyclopentyl-7-cyclopropyl-1-N-(furan-2-ylmethyl)-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide —— C22H27N5O4
(6S)-6-N-cyclopentyl-7-cyclopropyl-1-N-(furan-2-ylmethyl)-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide
—— (6R)-7-cyclopropyl-6-N-[(4-methoxyphenyl)methyl]-6-methyl-8-oxo-1-N-propan-2-yl-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide —— C23H29N5O4
(6R)-7-cyclopropyl-6-N-[(4-methoxyphenyl)methyl]-6-methyl-8-oxo-1-N-propan-2-yl-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide
—— (6S)-7-cyclopropyl-1-N,6-N-bis[(4-methoxyphenyl)methyl]-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide —— C28H31N5O5
(6S)-7-cyclopropyl-1-N,6-N-bis[(4-methoxyphenyl)methyl]-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide
—— (6R)-1-N-[(2-chlorophenyl)methyl]-7-cyclopropyl-6-N-[(4-methoxyphenyl)methyl]-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide —— C27H28ClN5O4
(6R)-1-N-[(2-chlorophenyl)methyl]-7-cyclopropyl-6-N-[(4-methoxyphenyl)methyl]-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide
—— (6R)-1-N-[(2-chlorophenyl)methyl]-6-N-cyclopentyl-7-cyclopropyl-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide —— C24H28ClN5O3
(6R)-1-N-[(2-chlorophenyl)methyl]-6-N-cyclopentyl-7-cyclopropyl-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide
—— (6S)-7-cyclopropyl-6-N-[(4-methoxyphenyl)methyl]-6-methyl-1-N-[(5-methylfuran-2-yl)methyl]-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide —— C26H29N5O5
(6S)-7-cyclopropyl-6-N-[(4-methoxyphenyl)methyl]-6-methyl-1-N-[(5-methylfuran-2-yl)methyl]-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide
—— (6R)-6-N-cyclopentyl-7-cyclopropyl-1-N-(2,3-dimethylphenyl)-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide —— C25H31N5O3
(6R)-6-N-cyclopentyl-7-cyclopropyl-1-N-(2,3-dimethylphenyl)-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide
—— (6R)-1-N-cyclohexyl-7-cyclopropyl-6-N-[(4-methoxyphenyl)methyl]-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide —— C26H33N5O4
(6R)-1-N-cyclohexyl-7-cyclopropyl-6-N-[(4-methoxyphenyl)methyl]-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide
—— (6R)-1-N-cyclooctyl-7-cyclopropyl-6-N-[(4-methoxyphenyl)methyl]-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide —— C28H37N5O4
(6R)-1-N-cyclooctyl-7-cyclopropyl-6-N-[(4-methoxyphenyl)methyl]-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide
—— (6S)-7-cyclopropyl-6-N-[(4-fluorophenyl)methyl]-1-N-[2-(furan-2-yl)ethyl]-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide —— C25H26FN5O4
(6S)-7-cyclopropyl-6-N-[(4-fluorophenyl)methyl]-1-N-[2-(furan-2-yl)ethyl]-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide
—— (6R)-7-cyclopropyl-6-N-[(4-methoxyphenyl)methyl]-6-methyl-1-N-(4-methylphenyl)-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide —— C27H29N5O4
(6R)-7-cyclopropyl-6-N-[(4-methoxyphenyl)methyl]-6-methyl-1-N-(4-methylphenyl)-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide
—— (6S)-7-cyclopropyl-N-[(4-methoxyphenyl)methyl]-6-methyl-8-oxo-1-(pyrrolidine-1-carbonyl)-5H-imidazo[1,5-a]pyrazine-6-carboxamide —— C24H29N5O4
(6S)-7-cyclopropyl-N-[(4-methoxyphenyl)methyl]-6-methyl-8-oxo-1-(pyrrolidine-1-carbonyl)-5H-imidazo[1,5-a]pyrazine-6-carboxamide
—— (6R)-6-N-cyclopentyl-7-cyclopropyl-6-methyl-8-oxo-1-N-[4-(trifluoromethoxy)phenyl]-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide —— C24H26F3N5O4
(6R)-6-N-cyclopentyl-7-cyclopropyl-6-methyl-8-oxo-1-N-[4-(trifluoromethoxy)phenyl]-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide
—— (6R)-6-N-cyclopentyl-7-cyclopropyl-6-methyl-8-oxo-1-N-(3-phenylpropyl)-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide —— C26H33N5O3
(6R)-6-N-cyclopentyl-7-cyclopropyl-6-methyl-8-oxo-1-N-(3-phenylpropyl)-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide
—— (6R)-6-N-cyclopentyl-7-cyclopropyl-6-methyl-1-N-[(3-methylphenyl)methyl]-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide —— C25H31N5O3
(6R)-6-N-cyclopentyl-7-cyclopropyl-6-methyl-1-N-[(3-methylphenyl)methyl]-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide
—— (6S)-7-cyclopropyl-1-N-(2,4-difluorophenyl)-6-N-[(4-methoxyphenyl)methyl]-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide —— C26H25F2N5O4
(6S)-7-cyclopropyl-1-N-(2,4-difluorophenyl)-6-N-[(4-methoxyphenyl)methyl]-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide
—— (6R)-1-N-butyl-7-cyclopropyl-6-N-[(4-methoxyphenyl)methyl]-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide —— C24H31N5O4
(6R)-1-N-butyl-7-cyclopropyl-6-N-[(4-methoxyphenyl)methyl]-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide
—— (6S)-7-cyclopropyl-1-N-[(4-ethoxyphenyl)methyl]-6-N-[(4-fluorophenyl)methyl]-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide —— C28H30FN5O4
(6S)-7-cyclopropyl-1-N-[(4-ethoxyphenyl)methyl]-6-N-[(4-fluorophenyl)methyl]-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide
—— (6S)-1-N-[2-(4-chlorophenyl)ethyl]-7-cyclopropyl-6-methyl-6-N-[(4-methylphenyl)methyl]-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide —— C28H30ClN5O3
(6S)-1-N-[2-(4-chlorophenyl)ethyl]-7-cyclopropyl-6-methyl-6-N-[(4-methylphenyl)methyl]-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide
—— (6R)-7-cyclopropyl-6-N-[(4-fluorophenyl)methyl]-6-methyl-1-N-(3-methylsulfanylphenyl)-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide —— C26H26FN5O3S
(6R)-7-cyclopropyl-6-N-[(4-fluorophenyl)methyl]-6-methyl-1-N-(3-methylsulfanylphenyl)-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide
—— (6S)-7-cyclopropyl-6-methyl-N-[(4-methylphenyl)methyl]-8-oxo-1-(piperidine-1-carbonyl)-5H-imidazo[1,5-a]pyrazine-6-carboxamide —— C25H31N5O3
(6S)-7-cyclopropyl-6-methyl-N-[(4-methylphenyl)methyl]-8-oxo-1-(piperidine-1-carbonyl)-5H-imidazo[1,5-a]pyrazine-6-carboxamide
—— (6S)-7-cyclopropyl-N-[(4-fluorophenyl)methyl]-6-methyl-1-(morpholine-4-carbonyl)-8-oxo-5H-imidazo[1,5-a]pyrazine-6-carboxamide —— C23H26FN5O4
(6S)-7-cyclopropyl-N-[(4-fluorophenyl)methyl]-6-methyl-1-(morpholine-4-carbonyl)-8-oxo-5H-imidazo[1,5-a]pyrazine-6-carboxamide
—— (6R)-7-cyclopropyl-N-[(4-fluorophenyl)methyl]-6-methyl-8-oxo-1-(pyrrolidine-1-carbonyl)-5H-imidazo[1,5-a]pyrazine-6-carboxamide —— C23H26FN5O3
(6R)-7-cyclopropyl-N-[(4-fluorophenyl)methyl]-6-methyl-8-oxo-1-(pyrrolidine-1-carbonyl)-5H-imidazo[1,5-a]pyrazine-6-carboxamide
—— (6S)-1-N-[(2-chlorophenyl)methyl]-7-cyclopropyl-6-methyl-6-N-[(4-methylphenyl)methyl]-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide —— C27H28ClN5O3
(6S)-1-N-[(2-chlorophenyl)methyl]-7-cyclopropyl-6-methyl-6-N-[(4-methylphenyl)methyl]-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide
—— (6S)-6-N-benzyl-7-cyclopropyl-6-methyl-1-N-[2-(4-methylphenyl)ethyl]-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide —— C28H31N5O3
(6S)-6-N-benzyl-7-cyclopropyl-6-methyl-1-N-[2-(4-methylphenyl)ethyl]-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide
—— (6R)-7-cyclopropyl-6-N-[(4-fluorophenyl)methyl]-6-methyl-8-oxo-1-N-propyl-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide —— C22H26FN5O3
(6R)-7-cyclopropyl-6-N-[(4-fluorophenyl)methyl]-6-methyl-8-oxo-1-N-propyl-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide
—— (6R)-7-cyclopropyl-6-methyl-N-[(4-methylphenyl)methyl]-8-oxo-1-(4-phenylpiperazine-1-carbonyl)-5H-imidazo[1,5-a]pyrazine-6-carboxamide —— C30H34N6O3
(6R)-7-cyclopropyl-6-methyl-N-[(4-methylphenyl)methyl]-8-oxo-1-(4-phenylpiperazine-1-carbonyl)-5H-imidazo[1,5-a]pyrazine-6-carboxamide
—— (6R)-1-N-(2-chloro-4-methylphenyl)-7-cyclopropyl-6-N-[(4-fluorophenyl)methyl]-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide —— C26H25ClFN5O3
(6R)-1-N-(2-chloro-4-methylphenyl)-7-cyclopropyl-6-N-[(4-fluorophenyl)methyl]-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide
—— (6R)-1-N-[2-(4-chlorophenyl)ethyl]-7-cyclopropyl-6-methyl-6-N-[(4-methylphenyl)methyl]-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide —— C28H30ClN5O3
(6R)-1-N-[2-(4-chlorophenyl)ethyl]-7-cyclopropyl-6-methyl-6-N-[(4-methylphenyl)methyl]-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide
—— (6R)-7-cyclopropyl-1-N-(2,3-dihydro-1,4-benzodioxin-6-yl)-6-N-[(4-fluorophenyl)methyl]-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide —— C27H26FN5O5
(6R)-7-cyclopropyl-1-N-(2,3-dihydro-1,4-benzodioxin-6-yl)-6-N-[(4-fluorophenyl)methyl]-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide
—— (6R)-1-N-[(3-chlorophenyl)methyl]-7-cyclopropyl-6-N-[(4-fluorophenyl)methyl]-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide —— C26H25ClFN5O3
(6R)-1-N-[(3-chlorophenyl)methyl]-7-cyclopropyl-6-N-[(4-fluorophenyl)methyl]-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide
—— (6S)-7-cyclopropyl-6-N-[(4-fluorophenyl)methyl]-1-N-[(4-methoxyphenyl)methyl]-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide —— C27H28FN5O4
(6S)-7-cyclopropyl-6-N-[(4-fluorophenyl)methyl]-1-N-[(4-methoxyphenyl)methyl]-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide
—— (6R)-N-benzyl-7-cyclopropyl-6-methyl-1-(morpholine-4-carbonyl)-8-oxo-5H-imidazo[1,5-a]pyrazine-6-carboxamide —— C23H27N5O4
(6R)-N-benzyl-7-cyclopropyl-6-methyl-1-(morpholine-4-carbonyl)-8-oxo-5H-imidazo[1,5-a]pyrazine-6-carboxamide
—— (6R)-7-cyclopropyl-1-N-(2,4-dimethylphenyl)-6-N-[(4-fluorophenyl)methyl]-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide —— C27H28FN5O3
(6R)-7-cyclopropyl-1-N-(2,4-dimethylphenyl)-6-N-[(4-fluorophenyl)methyl]-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide
—— (6S)-7-cyclopropyl-1-N-(3,4-dimethylphenyl)-6-N-[(4-fluorophenyl)methyl]-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide —— C27H28FN5O3
(6S)-7-cyclopropyl-1-N-(3,4-dimethylphenyl)-6-N-[(4-fluorophenyl)methyl]-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1,6-dicarboxamide