Task: Answer the MCQ question.
Query: Which drug exhibits a 16.186\% 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) CCOc1ccccc1NC(=O)C(=O)N/N=C/c1cc(Br)ccc1O
(b) CCc1ccccc1NC(=O)COC(=O)C1CC(=O)N(c2ccc(F)cc2)C1
Answer: a. CCOc1ccccc1NC(=O)C(=O)N/N=C/c1cc(Br)ccc1O
{#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#}
CCOc1ccccc1NC(=O)C(=O)N/N=C/c1cc(Br)ccc1O
CCOc1ccccc1NC(=O)C(=O)N/N=C/c1cc(Br)ccc1O
N'-[(E)-(5-bromo-2-hydroxyphenyl)methylideneamino]-N-(2-ethoxyphenyl)oxamide