The SMILES O=C(Nc1nnc(COc2ccc(Cl)cc2)s1)c1ccc([N+](=O)[O-])cc1 is not a human ether-à-go-go related gene (hERG) blocker.
The {#molecule |!}{SMILES__description} {SMILES#} is {herg_inhib#not &NULL}a {herg_inhib__names__noun}.