preferred_name: a ubiquinone + NADH + H(+) <=> a ubiquinol + NAD(+)
preferred_name_lc: a ubiquinone + nadh + h(+) <=> a ubiquinol + nad(+)
label: a ubiquinone + NADH + H(+) <=> a ubiquinol + NAD(+)
label_lc: a ubiquinone + nadh + h(+) <=> a ubiquinol + nad(+)