2-[2-Carboxy-6-(1,2-dihydroxyethyl)-2-[[5-(3-hexadec-9-enoyloxytetradecanoylamino)-6-[[3-hydroxy-5-(3-hydroxytetradecanoylamino)-4-(3-hydroxytetradecanoyloxy)-6-phosphonooxyoxan-2-yl]methoxy]-3-phosphonooxy-4-(3-tetradecanoyloxytetradecanoyloxy)oxan-2-yl]methoxy]-5-hydroxyoxan-4-yl]oxy-6-(1,2-dihydroxyethyl)-4,5-dihydroxyoxane-2-carboxylic acid