The SMILES Cn1c(=O)c2nc[nH]c2n(C)c1=O is from a molecule that is not a human ether-à-go-go related gene (hERG) blocker.
The {SMILES__description} {SMILES#} {#represents|is from!} a molecule that is {herg_blocker#not &NULL}a {herg_blocker__names__noun}.
1,3-dimethyl-9H-purine-2,6-dione