Showing structure for (2s,6s)-6-[(1s,3s,5r,7s,10s,14r,17r,18s)-7,17-dihydroxy-6,6,10,14,18-pentamethyl-13-oxo-2-oxapentacyclo[9.7.0.0¹,³.0⁵,¹⁰.0¹⁴,¹⁸]octadeca-11,15-dien-15-yl]-6-hydroxy-2-methyl-4-oxoheptanoic acid