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