The SMILES Cn1c(CCNC(=O)c2ccco2)nc2cc([N+](=O)[O-])ccc21 is not a hERG blocking compound (IC50 less than 10uM).
The {#molecule |!}{SMILES__description} {SMILES#} is {herg_inhib#not &NULL}a {herg_inhib__names__noun}.