preferred_name: peptide cross-linking via 2-(S-L-cysteinyl)-L-phenylalanine
preferred_name_lc: peptide cross-linking via 2-(s-l-cysteinyl)-l-phenylalanine
label: peptide cross-linking via 2-(S-L-cysteinyl)-L-phenylalanine
label_lc: peptide cross-linking via 2-(s-l-cysteinyl)-l-phenylalanine