Problem statement: Answer the multiple-choice question.
Question: Which compound has a 13.297\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a: O=C(O)c1ccc(N/N=C/c2cn(Cc3ccccc3F)c3ccccc23)cc1
b: CCN1C(=O)N[C@@H](c2cccs2)C(C(C)=O)=C1C
Answer: b. CCN1C(=O)N[C@@H](c2cccs2)C(C(C)=O)=C1C
{#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#}
CCN1C(=O)N[C@@H](c2cccs2)C(C(C)=O)=C1C
CCN1C(=O)N[C@@H](c2cccs2)C(C(C)=O)=C1C
(6R)-5-acetyl-3-ethyl-4-methyl-6-thiophen-2-yl-1,6-dihydropyrimidin-2-one