Problem statement: Answer the multiple-choice question.
Question: Which drug exhibits a 8.438\% 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] CCC(CC)C1C(C#N)=C(N)SC(N)=C1C#N
[b] N#CCC(=O)NNC(=S)Nc1ccccc1C(F)(F)F
Answer: a. CCC(CC)C1C(C#N)=C(N)SC(N)=C1C#N
{#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#}
2,6-diamino-4-pentan-3-yl-4H-thiopyran-3,5-dicarbonitrile