Showing structure for (1's,2s,2's,4's,5s,7's,8'r,9's,12's,13'r,15'r,16'r)-15',16'-bis(acetyloxy)-5,7',9',13'-tetramethyl-5'-oxaspiro[oxolane-2,6'-pentacyclo[10.8.0.0²,⁹.0⁴,⁸.0¹³,¹⁸]icosan]-18'-en-5-ylmethyl acetate