[{"from": "human", "value": "Use the given information to create a molecule that fulfills the desired purpose. The molecule is a monophosphate ethanolamine ester that is an intermediate in the biosynthesis of sphingomyelins."}, {"from": "gpt", "value": "[C][Branch1][O][C][O][P][=Branch1][C][=O][Branch1][C][O][O][N]"}]