User: I'm looking for the SMILES of a molecule that does not block the human ether-à-go-go related gene (hERG) (<10uM)?
Assistant: This is a molecule that is not a human ether-à-go-go related gene (hERG) blocker (<10uM): CCNC(=O)Nc1ccc2ncc(Nc3ccc(C)cc3)nc2n1
User: I'm {#searching|looking!} for the {SMILES__description} of a molecule that does {herg_blocker#not &NULL}{herg_blocker__names__verb}?
Assistant: This is a molecule that is {herg_blocker#not &NULL}a {herg_blocker__names__noun}: {SMILES#}
1-ethyl-3-[3-(4-methylanilino)pyrido[2,3-b]pyrazin-6-yl]urea