Task: Please predict if the compound with the SMILES O=C1C(=Cc2ccc(Br)o2)C(=O)c2ccccc21 is an inhibitor of factor XIa (FXIa).
Result: no
Task: Please {#determine|predict|estimate!} if the {#molecule|compound!} with the {SMILES__description} {SMILES#} is {MUV-846__names__noun}.
Result: {MUV-846#no&yes}
O=C1C(=Cc2ccc(Br)o2)C(=O)c2ccccc21
O=C1C(=Cc2ccc(Br)o2)C(=O)c2ccccc21
2-[(5-bromofuran-2-yl)methylidene]indene-1,3-dione