The SMILES O=Cc1cc(N=Nc2ccc(S(=O)(=O)[O-])cc2)ccc1O.[Na+] is not a hERG blocking compound (IC50 < 10uM).
The {#molecule |!}{SMILES__description} {SMILES#} is {herg_inhib#not &NULL}a {herg_inhib__names__noun}.