The molecule with the SMILES representation of Cn1c(=O)c2nc[nH]c2n(C)c1=O is not a hERG blocking compound (<10uM).
The molecule with the {SMILES__description} {#representation of |!}{SMILES#} is {herg_blocker#not &NULL}a {herg_blocker__names__noun}.
1,3-dimethyl-9H-purine-2,6-dione