Task: Please predict if the compound with the SMILES S=c1nc[nH]c2c1[nH]c1ccccc12 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}
S=c1nc[nH]c2c1[nH]c1ccccc12
S=c1nc[nH]c2c1[nH]c1ccccc12
1,5-dihydropyrimido[5,4-b]indole-4-thione