The molecule SMILES O=C1C=C(O)CC(c2ccc(Cl)c(Cl)c2)C1 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}.