preferred_name: trans-aconitate(out) + citrate(in) => trans-aconitate(in) + citrate(out)
preferred_name_lc: trans-aconitate(out) + citrate(in) => trans-aconitate(in) + citrate(out)
label: trans-aconitate(out) + citrate(in) => trans-aconitate(in) + citrate(out)
label_lc: trans-aconitate(out) + citrate(in) => trans-aconitate(in) + citrate(out)