The SMILES O=C1c2ccc(Oc3ccc4c(c3)C(=O)N(CCCO)C4=O)cc2C(=O)N1CCCO is not a hERG blocking compound (IC50 < 10uM).
The {#molecule |!}{SMILES__description} {SMILES#} is {herg_inhib#not &NULL}a {herg_inhib__names__noun}.