(1R)-2-[(hydroxy{[(1R,2R,3S,4R,5R,6S)-2,3,6-trihydroxy-4,5-bis(phosphonooxy)cyclohexyl]oxy}phosphoryl)oxy]-1-[(octadecanoyloxy)methyl]ethyl (5Z,8Z,11Z,14Z)-icosa-5,8,11,14-tetraenoate