(Z,Z)-1,4-bis[2-[2-[(1-oxooctadec-9-enyl)oxy]ethoxy]ethyl] 2-sulphosuccinate

2-Sulfobutanedioic acid 1,4-bis[2-[2-[[(Z)-1-oxo-9-octadecenyl]oxy]ethoxy]ethyl] ester