Showing structure for (1'r,2s,2's,3'r,4's,8'r,9'r)-9'-(acetyloxy)-12'-[(acetyloxy)methyl]-3'-methyl-10'-oxaspiro[oxirane-2,7'-tricyclo[6.4.0.0²,⁴]dodecan]-11'-en-3'-ylmethyl (4z)-dec-4-enoate