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