The SMILES O=c1[nH]cnc2c1sc1nc(C(F)F)cc(-c3ccccc3)c12 is not a human ether-à-go-go related gene (hERG) blocking compound.
The {#molecule |!}{SMILES__description} {SMILES#} is {herg_inhib#not &NULL}a {herg_inhib__names__noun}.