[{"from": "human", "value": "What can you tell me about this molecule? [C][C@@H1][C][C@@H1][Branch2][Branch2][Ring1][C@@H1][C@H1][Branch2][#Branch1][N][C][C@H1][Branch2][#Branch1][=Branch1][C@@][Branch1][Ring2][O][Ring1][=Branch1][Branch2][=Branch1][N][C][=Branch1][C][=O][C][=Branch1][C][=O][N][C][C][C][C][C@H1][Ring1][=Branch1][C][=Branch1][C][=O][O][C@@H1][Branch2][Ring1][#C][C@@H1][Branch2][Ring1][#Branch2][C@H1][Branch2][Ring1][Branch1][C][C][=Branch1][C][=O][C@@H1][Branch1][#Branch2][/C][=C][Branch1][Branch1][/C][Ring2][Ring1][S][\\C][C][C][=C][O][C][/C][=Branch1][P][=C][/C@@H1][C][C][C@H1][Branch1][=Branch2][C@@H1][Branch1][Ring2][C][Ring1][=Branch1][O][C][O][/C][O][C][O][C][O][C]"}, {"from": "gpt", "value": "The molecule is a calcineurin inhibitor and potent immunosuppressive agent used largely as a means of prophylaxis against cellular rejection after transplantation. Tacrolimus therapy can be associated with mild serum enzyme elevations, and it has been linked to rare instances of clinically apparent cholestatic liver injury."}]