Task: Answer the multiple choice question.
Question: Which drug has a -20.541% hERG inhibition at a concentration of 10uM?
Constraint: You must select none, one or more options from a, b, or c without using any other words.
Options:
a COc1ccc(NC(=O)NC23CC4CC(CC(C4)C2)C3)cc1OC
b CCOc1ccccc1OCCOCCOc1ccccc1[N+](=O)[O-]
c CCOC(=O)C1=C(C)N(C)C(=O)NC1c1ccc2c(c1)OCO2
Answer: b. CCOc1ccccc1OCCOCCOc1ccccc1[N+](=O)[O-]
{#Task|Problem statement!}: Answer the {#multiple choice|multiple-choice|MCQ!} question.
{#Question|Query!}: Which {#compound|drug!} {#has|exhibits!} a {herg_central_at_10uM#}{herg_central_at_10uM__units} {herg_central_at_10uM__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_10uM%}
Answer: {%multiple_choice_result}. {SMILES#}
CCOc1ccccc1OCCOCCOc1ccccc1[N+](=O)[O-]
CCOc1ccccc1OCCOCCOc1ccccc1[N+](=O)[O-]
1-[2-[2-(2-ethoxyphenoxy)ethoxy]ethoxy]-2-nitrobenzene