preferred_name: L-alanyl-D-glutamate(in) => L-alanyl-D-glutamate(out)
preferred_name_lc: l-alanyl-d-glutamate(in) => l-alanyl-d-glutamate(out)
label: L-alanyl-D-glutamate(in) => L-alanyl-D-glutamate(out)
label_lc: l-alanyl-d-glutamate(in) => l-alanyl-d-glutamate(out)