The chemical with the SMILES COc1cc(Cl)nn(-c2ccccc2)c1=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}.
COc1cc(Cl)nn(-c2ccccc2)c1=O
COc1cc(Cl)nn(-c2ccccc2)c1=O
6-chloro-4-methoxy-2-phenylpyridazin-3-one