trimethyl-(2-phosphonooxyethyl)azanium trimethyl-(2-phosphonooxyethyl)ammonium CHEBI:18132 N,N,N-trimethyl-2-(phosphonooxy)ethanaminium PC POC N-Trimethyl-2-aminoethylphosphonate O-Phosphocholine PHOSPHORYL-CHOLINE choline phosphate phosphocholine C00588