The molecule SMILES O=C1CCC(N2C(=O)c3ccccc3C2=O)C(=O)N1 is not a hERG blocker.
The {#molecule |!}{SMILES__description} {SMILES#} is {herg_blocker#not &NULL}a {herg_blocker__names__noun}.
2-(2,6-dioxopiperidin-3-yl)isoindole-1,3-dione