[{"from": "human", "value": "Provide a description of this molecule. [C][N][C][=N][C][=C][Ring1][Branch1][C][=C][Branch2][Ring1][#Branch1][C][=Branch1][Branch1][=C][Ring1][=Branch1][F][N][C][=C][Branch1][#Branch2][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][Br][Cl][C][=Branch1][C][=O][N][O][C][C][O]"}, {"from": "gpt", "value": "The molecule is an oral, small molecule inhibitor of the mitogen activated protein kinase 1 and 2 (MEK1/2) that is used to treat symptomatic, refractory fibromas in neurofibromatosis type 1. Selumetinib is associated with transient and usually mild elevations in serum aminotransferase levels during therapy, but has not been linked to cases of clinically apparent acute liver injury."}]