preferred_name: a diacylglycerol + H2O => a monoacylglycerol + a fatty acid + H(+)
preferred_name_lc: a diacylglycerol + h2o => a monoacylglycerol + a fatty acid + h(+)
label: a diacylglycerol + H2O => a monoacylglycerol + a fatty acid + H(+)
label_lc: a diacylglycerol + h2o => a monoacylglycerol + a fatty acid + h(+)