preferred_name: 4 nitric oxide + O2 + 2 H2O <=> 4 nitrite + 4 H(+)
preferred_name_lc: 4 nitric oxide + o2 + 2 h2o <=> 4 nitrite + 4 h(+)
label: 4 nitric oxide + O2 + 2 H2O <=> 4 nitrite + 4 H(+)
label_lc: 4 nitric oxide + o2 + 2 h2o <=> 4 nitrite + 4 h(+)