Showing structure for (2r,3e,5e,7s,9e,11e,13s,19r)-7-hydroxy-1,4,10,19-tetramethyl-17,18-dioxo-2-(2-oxopropanamido)-16-oxabicyclo[13.2.2]nonadeca-3,5,9,11-tetraen-13-yl acetate