preferred_name: a 2-acylglycerol + H2O => glycerol + a fatty acid + H(+)
preferred_name_lc: a 2-acylglycerol + h2o => glycerol + a fatty acid + h(+)
label: a 2-acylglycerol + H2O => glycerol + a fatty acid + H(+)
label_lc: a 2-acylglycerol + h2o => glycerol + a fatty acid + h(+)