138169-54-7 2,5-Cyclohexadien-1-one, 2-acetyl-6-((3-acetyl-2,4-dihydroxy-6-((3-methyl-2-butenyl)oxy)phenyl)methyl)-3,5-dihydroxy-4-methyl-4-(3-methyl-2-butenyl)- Drummondin E