The SMILES O=C1C(=O)N(c2cccc(Cl)c2)C(c2ccccc2[N+](=O)[O-])/C1=C(\O)c1ccccc1 is not a hERG blocking compound.
The {#molecule |!}{SMILES__description} {SMILES#} is {herg_inhib#not &NULL}a {herg_inhib__names__noun}.