preferred_name: a ubiquinone + nitrite + H2O => a ubiquinol + nitrate
preferred_name_lc: a ubiquinone + nitrite + h2o => a ubiquinol + nitrate
label: a ubiquinone + nitrite + H2O => a ubiquinol + nitrate
label_lc: a ubiquinone + nitrite + h2o => a ubiquinol + nitrate