Task: Answer the multiple-choice question.
Query: Which compound has a 16.006% hERG inhibition at a concentration of 10uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
a: S=c1[nH]nc(-c2cnccn2)n1-c1ccccc1
b: O=C(NC1CCCCC1)n1c(=O)oc2cc(S(=O)(=O)N3CCCCC3)ccc21
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_10uM#}{herg_central_at_10uM__units} {herg_central_at_10uM__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_10uM%}
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