preferred_name: citrate(in) + 2 Na(+)(in) => citrate(out) + 2 Na(+)(out)
preferred_name_lc: citrate(in) + 2 na(+)(in) => citrate(out) + 2 na(+)(out)
label: citrate(in) + 2 Na(+)(in) => citrate(out) + 2 Na(+)(out)
label_lc: citrate(in) + 2 na(+)(in) => citrate(out) + 2 na(+)(out)