Task: Please determine if the molecule with the SMILES O=c1c2cc(Br)ccc2[nH]c(=S)n1-c1ccccc1 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=c1c2cc(Br)ccc2[nH]c(=S)n1-c1ccccc1
O=c1c2cc(Br)ccc2[nH]c(=S)n1-c1ccccc1
6-bromo-3-phenyl-2-sulfanylidene-1H-quinazolin-4-one