Problem statement: Answer the multiple choice question.
Query: Which compound exhibits a 5.190\% 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 other words.
Options:
a CC(Nc1cccnc1)=C(C#N)C#N
b CC(=O)c1c(O)cc2n(c1=O)-c1ccc(Cl)cc1C2(C)C
Answer: a. CC(Nc1cccnc1)=C(C#N)C#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#}
CC(Nc1cccnc1)=C(C#N)C#N
CC(Nc1cccnc1)=C(C#N)C#N
2-[1-(pyridin-3-ylamino)ethylidene]propanedinitrile