Task: Answer the MCQ question.
Question: Which drug has a 25.743% hERG inhibition at a concentration of 10uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
(a) Nc1c([N+](=O)[O-])cc(-c2cnc[nH]2)cc1[N+](=O)[O-]
(b) CCOC(=O)NC(=O)c1cn(CCNCCO)c(=O)[nH]c1=O
Answer: b. CCOC(=O)NC(=O)c1cn(CCNCCO)c(=O)[nH]c1=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#}
CCOC(=O)NC(=O)c1cn(CCNCCO)c(=O)[nH]c1=O
CCOC(=O)NC(=O)c1cn(CCNCCO)c(=O)[nH]c1=O
ethyl N-[1-[2-(2-hydroxyethylamino)ethyl]-2,4-dioxopyrimidine-5-carbonyl]carbamate