The SMILES O=C1NC(=O)C(c2ccccc2)(c2ccccc2)N1 is from a molecule that is not a hERG blocking compound (<10uM).
The {SMILES__description} {SMILES#} {#represents|is from!} a molecule that is {herg_blocker#not &NULL}a {herg_blocker__names__noun}.
5,5-diphenylimidazolidine-2,4-dione