preferred_name: L-citrulline + methylamine => N(omega)-methyl-L-arginine + H2O
preferred_name_lc: l-citrulline + methylamine => n(omega)-methyl-l-arginine + h2o
label: L-citrulline + methylamine => N(omega)-methyl-L-arginine + H2O
label_lc: l-citrulline + methylamine => n(omega)-methyl-l-arginine + h2o