29077-59-6

6-[[2,2-Dimethyl-3-(1-methylethenyl)cyclobutyl]methyl]-3,4,6,7-tetrahydro-5-hydroxy-2,3-dimethyl-6-(3-methyl-2-butenyl)-4,7-dioxo-β-propyl-2H-1-benzopyran-8-propionic acid