Showing structure for (1's,2s,2'r,4'r,5s,7's,8's,9's,12's,13'r,16's)-16'-hydroxy-5-(hydroxymethyl)-5,7',9',13'-tetramethyl-5'-oxaspiro[oxolane-2,6'-pentacyclo[10.8.0.0²,⁹.0⁴,⁸.0¹³,¹⁸]icosan]-18'-en-11'-one