preferred_name: acetate(in) + Na(+)(in) = acetate(out) + Na(+)(out)
preferred_name_lc: acetate(in) + na(+)(in) = acetate(out) + na(+)(out)
label: acetate(in) + Na(+)(in) = acetate(out) + Na(+)(out)
label_lc: acetate(in) + na(+)(in) = acetate(out) + na(+)(out)