Dienoate

butyl (Z,Z,Z)-6-[(4-butoxy-1,4-dioxobut-2-enyl)oxy]oct-6-yl-4,8,11-trioxo-5,7,12-trioxa-6-stannahexadeca-2,9-dienoate

1-hydroxypropan-2-yl (9z,12z)-octadeca-9,12-dienoate