[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][C][C@H1][Branch1][C][C][C@H1][C][=Branch1][C][=O][N][C@H1][Branch2][Branch2][C][C][=Branch1][C][=O][N][C@H1][Branch2][#Branch1][Ring1][C][=Branch1][C][=O][N][C@@H1][Branch2][Ring2][=Branch1][C][S][S][C][C@@H1][Branch2][Ring1][=N][C][=Branch1][C][=O][N][C@H1][Branch1][=Branch2][C][=Branch1][C][=O][N][Ring2][Ring1][=Branch2][C][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][O][N][C][=Branch1][C][=O][N][C][C][C][C@H1][Ring1][Branch1][C][=Branch1][C][=O][N][C@@H1][Branch1][#Branch1][C][C][Branch1][C][C][C][C][=Branch1][C][=O][N][C][C][=Branch1][C][=O][N][C][C][=Branch1][C][=O][N][C][C][C][=Branch1][C][=O][N]"}, {"from": "gpt", "value": "The molecule is a cyclic nonapeptide hormone with amino acid sequence CYIQNCPLG that also acts as a neurotransmitter in the brain; the principal uterine-contracting and milk-ejecting hormone of the posterior pituitary. Together with the neuropeptide vasopressin, it is believed to influence social cognition and behaviour. It has a role as an oxytocic and a vasodilator agent. It is a peptide hormone and a heterodetic cyclic peptide."}]