The molecule with the SMILES CCCCc1c(O)n2ccccc2nc1=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}.
CCCCc1c(O)n2ccccc2nc1=O
CCCCc1c(O)n2ccccc2nc1=O
3-butyl-4-hydroxypyrido[1,2-a]pyrimidin-2-one