label: N(delta),N(omega')-dihydroxy-N(omega)-methyl-L-arginine + O2 <=> N(delta)-hydroxy-N(omega)-methyl-N(omega)-nitroso-L-citrulline + H2O
label_lc: n(delta),n(omega')-dihydroxy-n(omega)-methyl-l-arginine + o2 <=> n(delta)-hydroxy-n(omega)-methyl-n(omega)-nitroso-l-citrulline + h2o