label: 2 hydrogencarbonate(out) + chloride(in) + Na(+)(out) => 2 hydrogencarbonate(in) + chloride(out) + Na(+)(in)
label_lc: 2 hydrogencarbonate(out) + chloride(in) + na(+)(out) => 2 hydrogencarbonate(in) + chloride(out) + na(+)(in)