Showing structure for (1'r,2r,2's,3'r,4'r,5r,7's,8'r,9'r,10'r,12's,13's,16's,18's)-5,7',9',13'-tetramethyl-5'-oxaspiro[oxane-2,6'-pentacyclo[10.8.0.0²,⁹.0⁴,⁸.0¹³,¹⁸]icosane]-3',10',16'-triol