[{"from": "human", "value": "Provide a description of this molecule. [C][C@][C][C][C@H1][C@H1][Branch1][#Branch2][C@@H1][Ring1][=Branch1][C][C][C@@H1][Ring1][=Branch2][O][C][C][C][=C][Ring1][O][C][=C][C][=Branch1][=Branch1][=C][Ring1][=Branch1][O][C][O]"}, {"from": "gpt", "value": "The molecule is an endogenous metabolite formed during the O-methylation of the highly carcinogenic catechol estrogen 4-hydroxyestradiol (4-OHE2) by catechol-O-methyltransferase (COMT), with potential anti-proliferative activity. Even though the exact mechanism of action through which 4-methoxyestradiol (4-MeE2) exerts its effect is not fully elucidated, this chemical appears to have antiproliferative and apoptosis-inducing activities in susceptible tumor cells."}]