The SMILES CCCCNC(=O)CSc1nc2ccc(NC(=O)CSc3nnc(N)s3)cc2s1 is not a hERG blocking compound (IC50 < 10uM).
The {#molecule |!}{SMILES__description} {SMILES#} is {herg_inhib#not &NULL}a {herg_inhib__names__noun}.