Task: Please estimate if the compound with the SMILES O=C(c1ccc(Cl)c([N+](=O)[O-])c1)N1CCN(c2ccccc2)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}
(4-chloro-3-nitrophenyl)-(4-phenylpiperazin-1-yl)methanone