label: a 1-O-alkyl-sn-glycero-3-phosphocholine + a fatty acid + H(+) => a 1-O-alkyl-2-acyl-sn-glycero-3-phosphocholine + H2O
label_lc: a 1-o-alkyl-sn-glycero-3-phosphocholine + a fatty acid + h(+) => a 1-o-alkyl-2-acyl-sn-glycero-3-phosphocholine + h2o