Showing structure for (1's,2's,3s,5's,6's,8'r,11'r)-2'-ethenyl-1-methoxy-4'-methyl-9'-oxa-4'-azaspiro[indole-3,7'-tetracyclo[6.3.1.0²,⁶.0⁵,¹¹]dodecane]-2,3'-dione