The SMILES CNC(=O)CN1C(=O)NC(Cc2c[nH]c3ccccc23)C1=O 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}.