138169-53-6 2,5-Cyclohexadien-1-one, 2-acetyl-6-((6-acetyl-5,7-dihydroxy-2,2-dimethyl-2H-1-benzopyran-8-yl)methyl)-3,5-dihydroxy-4-methyl-4-(3-methyl-2-butenyl)- Isodrummondin D