94190-31-5

(E)-2-Methyl-2-butenoic acid (3aR)-2,3,3aβ,4,5,5a,6,7,8,9,9aβ,9bα-dodecahydro-6α,8β-dihydroxy-5aα-methyl-3,9-bis(methylene)-2-oxonaphtho[1,2-b]furan-4α-yl ester