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