英文名称: | 1,7-dioxadispiro(4.0.4.2)dodeca-2,8-diene-11,12-dicarboxylic acid, 2,8-bis(4-me | thylphenyl)- 3,9-dibromo-4,10-dioxo-, dimethyl ester, (5-alpha,6-alpha,11-alpha | ,12-alpha)- | 7-dioxadispiro(4.0.4.2)dodeca-2,8-diene-11,12-dicarboxylic acid,2,8-bis(4-methylphenyl)- 3,9-dibromo |
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