preferred_name: a 1-acylglycerol + a 1,3-diacylglycerol = a triacylglycerol + glycerol
preferred_name_lc: a 1-acylglycerol + a 1,3-diacylglycerol = a triacylglycerol + glycerol
label: a 1-acylglycerol + a 1,3-diacylglycerol = a triacylglycerol + glycerol
label_lc: a 1-acylglycerol + a 1,3-diacylglycerol = a triacylglycerol + glycerol