Invent a compound that is not an inhibitor of factor XIa (FXIa) and report its SMILES.
Result: CCCCC1C2=C(CCCC2=O)OC2=C1C(=O)CCC2
{#Create|Generate|Propose|Suggest|Design|Invent!} a {#molecule|compound!} that is {MUV-846#not &NULL}{MUV-846__names__noun} and report its {SMILES__description}.
Result: {SMILES#}
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