The SMILES CCOn1c(=O)c(-c2cccc([N+](=O)[O-])c2)[n+]([O-])c2ccccc21 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}.