The molecule SMILES Cc1onc(-c2ccc(Cl)cc2)c1-c1ccnc(=S)[nH]1 is not a hERG blocking compound (IC50 less than 10uM).
The {#molecule |!}{SMILES__description} {SMILES#} is {herg_inhib#not &NULL}a {herg_inhib__names__noun}.