Based on the SMILES O=[N+]([O-])c1cccc(-c2nnc3c4ccccc4c4ccccc4n23)c1, the molecule is not a hERG blocking compound (IC50 < 10uM).
Based on the {SMILES__description} {#representation |!}{SMILES#}, the molecule is {herg_inhib#not &NULL}a {herg_inhib__names__noun}.