Task: Answer the MCQ question.
Question: Which drug has a 8.173\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any other words.
Options:
(a) Cc1ccc(C(=O)NN2C(=O)C3C4c5ccccc5C(c5ccccc54)C3C2=O)cc1
(b) CCCCN(CCO)CCCC
(c) CC1=NNC(=O)c2ccccc2O1
Answer: b. CCCCN(CCO)CCCC
{#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#}
CCCCN(CCO)CCCC
CCCCN(CCO)CCCC
2-(dibutylamino)ethanol