Showing structure for (1s,3r,8s,11s,12s,15r,16r)-7,7,12,16-tetramethyl-15-[(2r)-6-methyl-5-oxoheptan-2-yl]pentacyclo[9.7.0.0¹,³.0³,⁸.0¹²,¹⁶]octadecan-6-one