The chemical with the SMILES O=[N+]([O-])c1ccc2c(c1)nc1n2CCN(C2CCCCC2)C1 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}.
(2-cyclohexyl-3,4-dihydro-1H-pyrazino[1,2-a]benzimidazol-8-yl)-oxido-oxoazanium