Showing structure for (2e)-4-{[(2r,4r,5r,6r)-2-[(2s,3r,4s)-3-hydroxy-4-[(2r,3s,4z,6z,9s,10s,11r,12z,14e)-10-hydroxy-3,15-dimethoxy-7,9,11,13-tetramethyl-16-oxo-1-oxacyclohexadeca-4,6,12,14-tetraen-2-yl]pentan-2-yl]-2-methoxy-5,6-dimethyloxan-4-yl]oxy}-4-oxobut-2-enoic acid