preferred_name: Ca(2+)(in) + K(+)(in) + 4 Na(+)(out) => Ca(2+)(out) + K(+)(out) + 4 Na(+)(in)
preferred_name_lc: ca(2+)(in) + k(+)(in) + 4 na(+)(out) => ca(2+)(out) + k(+)(out) + 4 na(+)(in)
label: Ca(2+)(in) + K(+)(in) + 4 Na(+)(out) => Ca(2+)(out) + K(+)(out) + 4 Na(+)(in)
label_lc: ca(2+)(in) + k(+)(in) + 4 na(+)(out) => ca(2+)(out) + k(+)(out) + 4 na(+)(in)