[{"from": "human", "value": "Could you provide a description of this molecule? [C][Branch1][Ring2][C][C][N][C][C@@H1][Branch2][Ring1][S][C][=Branch1][C][=O][N][C@@H1][Branch1][=Branch1][C][C][C][C][N][C][=Branch1][C][=O][N][C@@H1][Branch1][=Branch1][C][C][C][C][N][C][=Branch1][C][=O][O][N][C][=Branch1][C][=O][C@H1][Branch1][P][C][C][C][C][N][C][=Branch1][C][=O][C@H1][Branch1][Ring2][C][C][S][N][N]"}, {"from": "gpt", "value": "The molecule is a pentapeptide in which L-homocysteine is connected to tetralysine via a peptide bond to the epsilon-nitrogen of the N-terminal lysine residue."}]