The SMILES Nc1ncc2c(n1)CCN(c1ccc([N+](=O)[O-])cc1)C2 is not a hERG blocking compound (IC50 < 10uM).
The {#molecule |!}{SMILES__description} {SMILES#} is {herg_inhib#not &NULL}a {herg_inhib__names__noun}.