Task: Answer the multiple choice question.
Question: Which drug has a 2.578\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
a: CCC(C#CCN1CCOCC1)(CC)OCCC#N
b: Cc1ccc(C(=O)NCCCN2CCOCC2)c(Cl)c1
c: COC(=O)c1ccc(N2NC(=O)/C(=C/c3ccc(OC)c(OC)c3)C2=O)cc1
d: CCCC(c1nnnn1CCC(C)C)N1CCC(C(N)=O)CC1.Cl
Answer: a. CCC(C#CCN1CCOCC1)(CC)OCCC#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#}
CCC(C#CCN1CCOCC1)(CC)OCCC#N
CCC(C#CCN1CCOCC1)(CC)OCCC#N
3-(3-ethyl-6-morpholin-4-ylhex-4-yn-3-yl)oxypropanenitrile