Showing structure for methyl (1r,2s,3r,6r,8r,13s,14r,15r,16s)-10,15,16-trihydroxy-9,13-dimethyl-3-[(3-methylbutanoyl)oxy]-4,11-dioxo-5,18-dioxapentacyclo[12.5.0.0¹,⁶.0²,¹⁷.0⁸,¹³]nonadec-9-ene-17-carboxylate