Showing structure for (1'r,2r,2's,6'r,7'r,8'e,10'r)-9'-formyl-5'-methylidene-4'-oxo-3',14'-dioxaspiro[oxirane-2,13'-tricyclo[8.3.1.0²,⁶]tetradecan]-8'-en-7'-yl 2-methylprop-2-enoate