Task: Answer the MCQ question.
Question: Which compound exhibits a 4.257\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a: CN1CC2=CC(O)CC3Oc4c(O)ccc(c4[C@]23C)C1
b: Cc1cc(C)c(NC(=O)COC(=O)c2ccc([N+](=O)[O-])s2)c(C)c1
Answer: b. Cc1cc(C)c(NC(=O)COC(=O)c2ccc([N+](=O)[O-])s2)c(C)c1
{#Task|Problem statement!}: Answer the {#multiple choice|multiple-choice|MCQ!} question.
{#Question|Query!}: Which {#compound|drug!} {#has|exhibits!} a {herg_central_at_1uM#}{herg_central_at_1uM__units} {herg_central_at_1uM__names__noun}?
Constraint: You must select none, one or more options from {%multiple_choice_enum%2-5%aA1} without using any {#other|additional!} words.
Options:
{SMILES%herg_central_at_1uM%}
Answer: {%multiple_choice_result}. {SMILES#}
Cc1cc(C)c(NC(=O)COC(=O)c2ccc([N+](=O)[O-])s2)c(C)c1
Cc1cc(C)c(NC(=O)COC(=O)c2ccc([N+](=O)[O-])s2)c(C)c1
[2-oxo-2-(2,4,6-trimethylanilino)ethyl] 5-nitrothiophene-2-carboxylate