[{"from": "human", "value": "Describe this molecule. [C][C][=C][Branch1][O][C][=C][C][=Branch1][Branch1][=C][Ring1][=Branch1][Cl][Cl][N][=C][N][Ring1][N][C][C][=Branch1][C][=O][N][Ring1][=Branch1]"}, {"from": "gpt", "value": "The molecule is a platelet-reducing agent used to lower dangerously elevated platelet levels (i.e. to treat thrombocythemia) in patients with myeloproliferative neoplasms. It is an oral imidazoquinazoline that was first approved for use in the US in 1997. It appears to carry a better response rate than other thrombocythemia treatments (e.g. [busulfan], [hydroxyurea]) and may be better tolerated."}]