The SMILES O=[N+]([O-])c1cccc2c(S(=O)(=O)N3CCOCC3)cccc12 is not a hERG blocking compound (IC50 < 10uM).
The {#molecule |!}{SMILES__description} {SMILES#} is {herg_inhib#not &NULL}a {herg_inhib__names__noun}.