Task: Answer the MCQ question.
Question: Which drug exhibits a 4.190\% 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 O=C(Nc1nc2ccc([N+](=O)[O-])cc2s1)c1c(F)cccc1F
b CCN(CC(=O)NC(C)(C)C)C(=O)c1ccc(Br)cc1
Answer: b. CCN(CC(=O)NC(C)(C)C)C(=O)c1ccc(Br)cc1
{#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#}
4-bromo-N-[2-(tert-butylamino)-2-oxoethyl]-N-ethylbenzamide