The molecule SMILES O=[N+]([O-])c1cc([N+](=O)[O-])c(CCNc2ccccc2)c([N+](=O)[O-])c1 is not a hERG blocker.
The {#molecule |!}{SMILES__description} {SMILES#} is {herg_inhib#not &NULL}a {herg_inhib__names__noun}.