Showing structure for 4-({2-hydroxy-2-[3-hydroxy-4-(10-hydroxy-3-methoxy-7,9,11,13,15-pentamethyl-16-oxo-1-oxacyclohexadeca-4,6,12,14-tetraen-2-yl)pentan-2-yl]-6-isopropyl-5-methyloxan-4-yl}oxy)-n-(2-hydroxy-5-oxocyclopent-1-en-1-yl)-4-oxobut-2-enimidic acid