26358-40-7

(E)-2-Methyl-2-butenoic acid [(1S,11S)-11-hydroxy-1α,7aβ-dimethyl-5-methylene-4,8-dioxo-2β,6β-methano-1,4,5,6,7,7a,8,10aα-octahydro-2H-cyclopent[d]oxonin-7α-yl] ester