label: a monoacylglycerophospholipid + a triacyl-sn-glycerol => a glycerophospholipid + a 1,2-diacyl-sn-glycerol
label_lc: a monoacylglycerophospholipid + a triacyl-sn-glycerol => a glycerophospholipid + a 1,2-diacyl-sn-glycerol