Showing structure for [(1s,6s,7s,11r,13r,16r,17s)-7-hydroxy-6,10,16-trimethyl-4,8,15-trioxo-3,14-dioxatetracyclo[11.4.0.0¹,⁵.0⁶,¹¹]heptadec-9-en-17-yl]acetic acid