The molecular species with the SMILES representation of CCCC(=O)c1cc2ccccc2oc1=O is not an inhibitor of factor XIa (FXIa).
The {#molecule|compound|chemical|molecular species|chemical compound!} with the {SMILES__description} {#representation of |!}{SMILES#} is {MUV-846#not &NULL}{MUV-846__names__noun}.
CCCC(=O)c1cc2ccccc2oc1=O
CCCC(=O)c1cc2ccccc2oc1=O
3-butanoylchromen-2-one