The SMILES COC(=O)c1ccc(Oc2ccc(C(C)(C)C)cc2)c([N+](=O)[O-])c1 is not a hERG blocking compound (IC50 < 10uM).
The {#molecule |!}{SMILES__description} {SMILES#} is {herg_inhib#not &NULL}a {herg_inhib__names__noun}.