The molecule is a phosphatidylcholine (22:4/20:4) which carries a (6Z,9Z,12Z,15Z)-22-oxodocosa-6,9,12,15-tetraen-22-yl group at position 1 and a (5Z,8Z,11Z,14Z)-icosa-5,8,11,14-tetraenoyl group at position 2.
[(2R)-3-[(7Z,10Z,13Z,16Z)-docosa-7,10,13,16-tetraenoyl]oxy-2-[(5Z,8Z,11Z,14Z)-icosa-5,8,11,14-tetraenoyl]oxypropyl] 2-(trimethylazaniumyl)ethyl phosphate