The SMILES O=C1CC(N2CCN(C(c3ccccc3)c3ccccc3)CC2)C(=O)N1Cc1ccc(N2CCCC2=O)cc1 is not a hERG blocker.
The {#molecule |!}{SMILES__description} {SMILES#} is {herg_inhib#not &NULL}a {herg_inhib__names__noun}.