label: a 1-acylglycerol + a 1-acyl-sn-glycero-3-phosphocholine => glycerol + a 1,2-diacyl-sn-glycero-3-phosphocholine
label_lc: a 1-acylglycerol + a 1-acyl-sn-glycero-3-phosphocholine => glycerol + a 1,2-diacyl-sn-glycero-3-phosphocholine