preferred_name: fumarate(in) + 3 H(+)(in) => fumarate(out) + 3 H(+)(out)
preferred_name_lc: fumarate(in) + 3 h(+)(in) => fumarate(out) + 3 h(+)(out)
label: fumarate(in) + 3 H(+)(in) => fumarate(out) + 3 H(+)(out)
label_lc: fumarate(in) + 3 h(+)(in) => fumarate(out) + 3 h(+)(out)