The SMILES CCCC(C)NC(=O)c1sc2nc3n(c(=O)c2c1C)CCC3 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}.