The SMILES O=C(Nc1nnc(SCC(=O)N2CCCc3ccccc32)s1)c1ccccc1 is not a hERG blocking compound (IC50 less than 10uM).
The {#molecule |!}{SMILES__description} {SMILES#} is {herg_inhib#not &NULL}a {herg_inhib__names__noun}.