Showing structure for (1s,2s,3r,7s,8s,11s,12r,14r,15r,17s)-12,14,15-trihydroxy-4,8,11,15-tetramethyl-10,18-dioxatetracyclo[9.7.0.0²,⁷.0³,¹⁷]octadec-4-en-6-one