[{"from": "human", "value": "Provide a description of this molecule. [C][C][C][C][Branch1][Ring2][C][Ring1][Branch1][C@@H1][Branch1][Ring2][C][C][#N][N][C][=C][Branch1][Branch1][C][=N][Ring1][Branch1][C][=C][C][=C][N][C][Ring1][Branch1][=N][C][=N][Ring1][=Branch2]"}, {"from": "gpt", "value": "The molecule is a small molecule Janus kinase inhibitor that is used in the treatment of intermediate or high risk myelofibrosis and resistant forms of polycythemia vera and graft-vs-host disease. Ruxolitinib is associated with transient and usually mild elevations in serum aminotransferase during therapy and to rare instances of self-limited, clinically apparent idiosyncratic acute liver injury as well as to cases of reactivation of hepatitis B in susceptible individuals."}]