preferred_name: thymidine(out) + Na(+)(out) <=> thymidine(in) + Na(+)(in)
preferred_name_lc: thymidine(out) + na(+)(out) <=> thymidine(in) + na(+)(in)
label: thymidine(out) + Na(+)(out) <=> thymidine(in) + Na(+)(in)
label_lc: thymidine(out) + na(+)(out) <=> thymidine(in) + na(+)(in)