SMILES: CC1([C@@H](N[C@H](S1)C(C(=O)NCCCC[C@H](C(=O)O)N)NC(=O)CC2=CC=CC=C2)C(=O)O)C.C(CCN)C[C@H](C(=O)O)N
Description: The molecule is poly-L-lysine (n > 40) in which 50-70% of the epsilon-amino groups are substituted with benzylpenicilloyl groups. It is used as a skin-testing reagent to detect immunoglobulin E antibodies in people with a history of penicillin allergy. It has a role as a diagnostic agent. It is a thiazolidinemonocarboxylic acid, a random copolymer, an amino acid amide and a polypeptide. It derives from a benzylpenicillin.