Problem statement: Answer the MCQ question.
Question: Which drug has a 20.263\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
(a) CC1CCN(C(=O)c2cccc(S(=O)(=O)N3CCCCC3)c2)CC1
(b) CCOC(=O)CSc1nnnn1-c1cccc2ccccc12
Answer: b. CCOC(=O)CSc1nnnn1-c1cccc2ccccc12
{#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#}
CCOC(=O)CSc1nnnn1-c1cccc2ccccc12
CCOC(=O)CSc1nnnn1-c1cccc2ccccc12
ethyl 2-(1-naphthalen-1-yltetrazol-5-yl)sulfanylacetate