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