Showing structure for (1r,2s,3r,6r,8s,12s,13s,14r,15r,16s,17s)-12,15,16-trihydroxy-9,13,17-trimethyl-4,11-dioxo-5,18-dioxapentacyclo[12.5.0.0¹,⁶.0²,¹⁷.0⁸,¹³]nonadec-9-en-3-yl (2s)-2-(acetyloxy)-2-methylbutanoate