Task: Please determine if the compound with the SMILES O=c1c2c([N+](=O)[O-])cc([N+](=O)[O-])cc2sn1-c1ccc(Br)cc1 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=c1c2c([N+](=O)[O-])cc([N+](=O)[O-])cc2sn1-c1ccc(Br)cc1
O=c1c2c([N+](=O)[O-])cc([N+](=O)[O-])cc2sn1-c1ccc(Br)cc1
2-(4-bromophenyl)-4,6-dinitro-1,2-benzothiazol-3-one