preferred_name: adenosine(in) + H(+)(in) = adenosine(out) + H(+)(out)
preferred_name_lc: adenosine(in) + h(+)(in) = adenosine(out) + h(+)(out)
label: adenosine(in) + H(+)(in) = adenosine(out) + H(+)(out)
label_lc: adenosine(in) + h(+)(in) = adenosine(out) + h(+)(out)