The SMILES Cc1nnc(C)c2c(C)n(-c3cccc4cccnc34)c(C)c12 is not a hERG blocking compound (IC50 < 10uM).
The {#molecule |!}{SMILES__description} {SMILES#} is {herg_inhib#not &NULL}a {herg_inhib__names__noun}.