[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is an Estrogen Agonist/Antagonist. The mechanism of action of tamoxifen is as a Selective Estrogen Receptor Modulator."}, {"from": "gpt", "value": "[C][C][/C][=Branch2][Ring1][=C][=C][Branch1][=Branch2][\\C][=C][C][=C][C][=C][Ring1][=Branch1][/C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][O][C][C][N][Branch1][C][C][C][/C][=C][C][=C][C][=C][Ring1][=Branch1]"}]