preferred_name: citrate(out) + 2-oxoglutarate(in) => citrate(in) + 2-oxoglutarate(out)
preferred_name_lc: citrate(out) + 2-oxoglutarate(in) => citrate(in) + 2-oxoglutarate(out)
label: citrate(out) + 2-oxoglutarate(in) => citrate(in) + 2-oxoglutarate(out)
label_lc: citrate(out) + 2-oxoglutarate(in) => citrate(in) + 2-oxoglutarate(out)