preferred_name: a ubiquinol + 2 H(+)(out) => H2 + a ubiquinone + 2 H(+)(in)
preferred_name_lc: a ubiquinol + 2 h(+)(out) => h2 + a ubiquinone + 2 h(+)(in)
label: a ubiquinol + 2 H(+)(out) => H2 + a ubiquinone + 2 H(+)(in)
label_lc: a ubiquinol + 2 h(+)(out) => h2 + a ubiquinone + 2 h(+)(in)