Showing structure for (1r,2r,5s,6r,9s,12s,13r,19r)-6-[(2r)-4,5-dimethyl-6-oxo-2,3-dihydropyran-2-yl]-2,19-dihydroxy-6,13-dimethyl-7-oxapentacyclo[10.8.0.0²,⁹.0⁵,⁹.0¹³,¹⁸]icosa-15,17-diene-8,14-dione