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