The SMILES Cc1nc2ccc(S(=O)(=O)NCC(=O)N3CCc4ccccc4C3)cc2s1 is not a hERG blocking compound (IC50 < 10uM).
The {#molecule |!}{SMILES__description} {SMILES#} is {herg_inhib#not &NULL}a {herg_inhib__names__noun}.