Task: Please determine if the compound with the SMILES CCCCC1C2=C(CCCC2=O)OC2=C1C(=O)CCC2 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}
CCCCC1C2=C(CCCC2=O)OC2=C1C(=O)CCC2
CCCCC1C2=C(CCCC2=O)OC2=C1C(=O)CCC2
9-butyl-3,4,5,6,7,9-hexahydro-2H-xanthene-1,8-dione