Based on the SMILES CN1C2C=C3C(C#N)=C(N)C(C#N)(C#N)C(c4ccc(Br)cc4)C3C1CC2, 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}.