preferred_name: 3 Li(+)(in) + Ca(2+)(out) => 3 Li(+)(out) + Ca(2+)(in)
preferred_name_lc: 3 li(+)(in) + ca(2+)(out) => 3 li(+)(out) + ca(2+)(in)
label: 3 Li(+)(in) + Ca(2+)(out) => 3 Li(+)(out) + Ca(2+)(in)
label_lc: 3 li(+)(in) + ca(2+)(out) => 3 li(+)(out) + ca(2+)(in)