6129-34-6

(2E)-4-[5-hydroxy-2,10,10-trimethyl-6-(3-methylbut-2-en-1-yl)-2-(4-methylpent-3-en-1-yl)-14,15-dioxo-10a,11,12,14-tetrahydro-2H,10H-8,12-methanofuro[3,4-g]pyrano[2,3-a]xanthen-8-yl]-2-methylbut-2-enoic acid