[{"from": "human", "value": "Could you provide a description of this molecule? [C][=C][N][Branch2][Ring1][#Branch1][C][=Branch1][#C][=N][C][C][C][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][N][N][=C][Ring1][S][N][C@H1][C@@H1][Branch1][=N][C@@H1][Branch1][=Branch2][C@H1][Branch1][Ring2][O][Ring1][Branch1][C][O][O][O]"}, {"from": "gpt", "value": "The molecule is cytidine in which the 2-keto group on the cytosine ring is substituted by an epsilon-Llysyl residue. It is a L-lysine derivative, a member of cytidines and a non-proteinogenic L-alpha-amino acid."}]