User: I'm searching for the SMILES of a molecule that not is active against the human ether-à-go-go related gene (hERG)?
Assistant: This is a molecule that is not a hERG blocker: CCOC(=O)C1=C(C)NC(C)=C(C(=O)OC)[C@H]1c1cccc([N+](=O)[O-])c1
User: I'm {#searching|looking!} for the {SMILES__description} of a molecule that {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#}
5-O-ethyl 3-O-methyl (4R)-2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate