Task: Please estimate if the molecule with the SMILES O=c1oc(-c2cccs2)nc2c1cnn2-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}
1-phenyl-6-thiophen-2-ylpyrazolo[3,4-d][1,3]oxazin-4-one