Task: Answer the multiple-choice question.
Question: Which compound exhibits a 21.162\% 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) CN(CCO)C(=O)c1ccc(-c2nn(C)c(=O)c3ccccc23)cc1
(b) Cc1cccn2c(=O)nc(SCC(=O)Nc3ccc4c(c3)OCO4)nc12
(c) Fc1ccc(C2CC(c3ccco3)=Nc3ccccc3S2)cc1
(d) CCCCCOCC(O)CCC(=O)NN
Answer: d. CCCCCOCC(O)CCC(=O)NN
{#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#}
CCCCCOCC(O)CCC(=O)NN
CCCCCOCC(O)CCC(=O)NN
4-hydroxy-5-pentoxypentanehydrazide