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