preferred_name: L-leucyl-L-proline(in) + H(+)(in) => L-leucyl-L-proline(out) + H(+)(out)
preferred_name_lc: l-leucyl-l-proline(in) + h(+)(in) => l-leucyl-l-proline(out) + h(+)(out)
label: L-leucyl-L-proline(in) + H(+)(in) => L-leucyl-L-proline(out) + H(+)(out)
label_lc: l-leucyl-l-proline(in) + h(+)(in) => l-leucyl-l-proline(out) + h(+)(out)