Task: Answer the multiple-choice question.
Query: Which compound exhibits a 3.927\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a CCOC(=O)N1CCN(C(=O)c2noc(C(C)C)c2[N+](=O)[O-])CC1
b Cn1ncc2nc[nH]c(=O)c21
Answer: a. CCOC(=O)N1CCN(C(=O)c2noc(C(C)C)c2[N+](=O)[O-])CC1
{#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#}
CCOC(=O)N1CCN(C(=O)c2noc(C(C)C)c2[N+](=O)[O-])CC1
CCOC(=O)N1CCN(C(=O)c2noc(C(C)C)c2[N+](=O)[O-])CC1
ethyl 4-(4-nitro-5-propan-2-yl-1,2-oxazole-3-carbonyl)piperazine-1-carboxylate