208455-09-8

2-Butenal,2-methyl-4-[3a,4,5,7-tetrahydro-8,10-dihydroxy-3,3-dimethyl-9,11-bis(3-methyl-2-buten-1-yl)-7,13-dioxo-1,5-methano-1H,3H-furo[3,4-d]xanthen-1-yl]-,(2E)-