Task: Answer the multiple-choice question.
Query: Which compound exhibits a 4.987\% 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)C1CCCCN1Cc1cc(Cl)ccc1O
b.) O=C(CSc1nc2[nH]ncc2c(=O)n1-c1ccccc1)N1CCCc2ccccc21
Answer: a. CCOC(=O)C1CCCCN1Cc1cc(Cl)ccc1O
{#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)C1CCCCN1Cc1cc(Cl)ccc1O
CCOC(=O)C1CCCCN1Cc1cc(Cl)ccc1O
ethyl 1-[(5-chloro-2-hydroxyphenyl)methyl]piperidine-2-carboxylate