Showing structure for (1r,2r,3s,4r,8s,9r,12z,14s,17r)-2,9-dihydroxy-4,8,12,17-tetramethyl-15,18-dioxatetracyclo[12.4.0.0¹,¹⁷.0³,⁸]octadeca-6,12-diene-5,16-dione