The SMILES O=C(CCn1c(=O)[nH]c2ccccc2c1=O)N1CC=C(c2ccccc2)CC1 is not a hERG blocking compound (IC50 < 10uM).
The {#molecule |!}{SMILES__description} {SMILES#} is {herg_inhib#not &NULL}a {herg_inhib__names__noun}.