[{"from": "human", "value": "Provide a description of this molecule. [C][C][Branch1][C][C][C@@H1][Branch2][Ring1][=C][C][=Branch1][C][=O][N][C@@H1][Branch1][P][C][C][C][C][N][C][=Branch1][C][=O][C@H1][Branch1][Ring2][C][C][S][N][C][=Branch1][C][=O][O][N]"}, {"from": "gpt", "value": "The molecule is a branched tripeptide in which L-homocysteine and L-valine are linked via peptide bonds to the epsilon- and alpha-nitrogens respectively of L-lysine."}]