The SMILES Cn1ncc(Br)c1C(=O)OCC(=O)Nc1nc(-c2ccccc2)cs1 is not a hERG blocking compound (IC50 < 10uM).
The {#molecule |!}{SMILES__description} {SMILES#} is {herg_inhib#not &NULL}a {herg_inhib__names__noun}.