Task: Answer the MCQ question.
Question: Which drug has a 6.519\% 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. COc1ccccc1-c1cc(-c2ccccc2)nc(SC(C(N)=O)c2ccccc2)c1C#N
b. O=C(CSc1nc2[nH]ncc2c(=O)[nH]1)Nc1ccc(Cl)cc1
Answer: b. O=C(CSc1nc2[nH]ncc2c(=O)[nH]1)Nc1ccc(Cl)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#}
O=C(CSc1nc2[nH]ncc2c(=O)[nH]1)Nc1ccc(Cl)cc1
O=C(CSc1nc2[nH]ncc2c(=O)[nH]1)Nc1ccc(Cl)cc1
N-(4-chlorophenyl)-2-[(4-oxo-1,5-dihydropyrazolo[3,4-d]pyrimidin-6-yl)sulfanyl]acetamide