Showing structure for (1s,4r,5r,6r,7s,8r,11r,13s,17s,18s,19r)-5,17-dihydroxy-6,14,18-trimethyl-9,16-dioxo-3,10-dioxapentacyclo[9.8.0.0¹,⁷.0⁴,¹⁹.0¹³,¹⁸]nonadec-14-en-8-yl (2r)-2-methylbutanoate