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