Task: Please determine if the compound with the SMILES CCc1nn(-c2ccccc2)c(=S)c2ccccc12 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-ethyl-2-phenylphthalazine-1-thione