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