Showing structure for (1'r,2r,2's,3's,4'r,5r,8's,9'r,12's,13's,16's,18's)-5,9',13'-trimethyl-5'-oxaspiro[oxane-2,6'-pentacyclo[10.8.0.0²,⁹.0⁴,⁸.0¹³,¹⁸]icosane]-3',16'-diol