Task: Answer the multiple choice question.
Question: Which compound exhibits a 7.764\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any other words.
Options:
a. S=c1[nH]nc(-c2cnccn2)n1-c1ccccc1
b. NC(=O)c1ccc(NC(=O)COc2cccc3ccccc23)cc1
c. CCC(CC)NC(=O)Nc1ccc(F)cc1F
Answer: a. S=c1[nH]nc(-c2cnccn2)n1-c1ccccc1
{#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#}
S=c1[nH]nc(-c2cnccn2)n1-c1ccccc1
S=c1[nH]nc(-c2cnccn2)n1-c1ccccc1
4-phenyl-3-pyrazin-2-yl-1H-1,2,4-triazole-5-thione