[{"from": "human", "value": "What can you tell me about this molecule? [C][C][=Branch1][C][=O][C][C][Branch1][=Branch2][C][=C][C][=C][C][=C][Ring1][=Branch1][C][=C][Branch1][=C][C][=C][C][=C][C][=C][Ring1][=Branch1][O][C][Ring1][#Branch2][=O][O]"}, {"from": "gpt", "value": "The molecule is a commonly used oral anticoagulant with anti-vitamin K activity. Warfarin therapy is associated with rare instances of idiosyncratic, clinically apparent liver injury that are usually mild and rapidly reversible on stopping."}]