preferred_name: succinate(in) + phosphate(out) => succinate(out) + phosphate(in)
preferred_name_lc: succinate(in) + phosphate(out) => succinate(out) + phosphate(in)
label: succinate(in) + phosphate(out) => succinate(out) + phosphate(in)
label_lc: succinate(in) + phosphate(out) => succinate(out) + phosphate(in)