methyl (Z,Z,Z)-8-[(4-methoxy-1,4-dioxobut-2-enyl)oxy]-8-octyl-3,6,10-trioxo-2,7,9-trioxa-8-stannatrideca-4,11-dien-13-oate

(4Z,11Z)-8-[[(2Z)-(4-Methoxy-1,4-dioxo-2-butenyl)]oxy]-8-octyl-3,6,10-trioxo-2,7,9-trioxa-8-stannatrideca-4,11-diene-13-carboxylic acid methyl ester