The SMILES COC(=O)c1ccc(COC(=O)C2CC(O)CN2S(=O)(=O)c2ccc([N+](=O)[O-])cc2)cc1 is not a hERG blocker.
The {#molecule |!}{SMILES__description} {SMILES#} is {herg_inhib#not &NULL}a {herg_inhib__names__noun}.