Task: Answer the multiple choice question.
Question: Which compound exhibits a 6.750\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
[a] CCCC(=O)Nc1ccc2oc(-c3ccncc3)nc2c1
[b] COC(=O)c1c(-c2ccccc2)csc1N1C(=O)Nc2ccccc2N1O
Answer: a. CCCC(=O)Nc1ccc2oc(-c3ccncc3)nc2c1
{#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#}
CCCC(=O)Nc1ccc2oc(-c3ccncc3)nc2c1
CCCC(=O)Nc1ccc2oc(-c3ccncc3)nc2c1
N-(2-pyridin-4-yl-1,3-benzoxazol-5-yl)butanamide