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