117211-86-6 6H-1,3-Dioxolo(4,5-g)(1)benzopyran-6-one, 7-acetyl-7,8-dihydro-8-(3,4,5-trimethoxyphenyl)-, trans- 7-Acetyl-7,8-dihydro-8-(3,4,5-trimethoxyphenyl)-6H-1,3-dioxolo(4,5-g)(1)benzopyran-6-one trans-