preferred_name: L-arginyl-L-alpha-amino acid(out) = L-arginyl-L-alpha-amino acid(in)
preferred_name_lc: l-arginyl-l-alpha-amino acid(out) = l-arginyl-l-alpha-amino acid(in)
label: L-arginyl-L-alpha-amino acid(out) = L-arginyl-L-alpha-amino acid(in)
label_lc: l-arginyl-l-alpha-amino acid(out) = l-arginyl-l-alpha-amino acid(in)