Showing structure for (1's,2r,2's,4'r,6's,11'r,12's,14'r,21's)-14'-hydroxy-3,4,11',17',21'-pentamethyl-5'-oxaspiro[furan-2,15'-hexacyclo[12.6.1.0²,¹².0⁴,⁶.0⁶,¹¹.0¹⁸,²¹]henicosane]-8',17'-diene-5,10',16'-trione