Showing structure for 3-(4-{15-[(4,5-dihydroxy-6-methyloxan-2-yl)oxy]-1-hydroxy-12,14,16-trimethylheptadeca-2,4,6,8,10,12-hexaen-1-ylidene}-1-methyl-3,5-dioxopyrrolidin-2-yl)propanoic acid