The molecule SMILES O=[N+]([O-])C(=c1ccc2c(c1)N1C3=C(CCCC3)CC3CCCCC31N=2)[N+](=O)[O-] is not a hERG blocking compound (IC50 < 10uM).
The {#molecule |!}{SMILES__description} {SMILES#} is {herg_inhib#not &NULL}a {herg_inhib__names__noun}.