[{"from": "human", "value": "Provide a description of this molecule. [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]"}, {"from": "gpt", "value": "The molecule is a nonsteroidal antiestrogen that is widely used in the treatment and prevention of breast cancer. Long term tamoxifen therapy has been associated with development of fatty liver, steatohepatitis, cirrhosis, and rare instances of clinically apparent acute liver injury."}]