Task: Answer the MCQ question.
Query: Which drug exhibits a -4.000\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a: CN1CCN(c2ccccc2NC(=O)c2ccc(-c3ccc(Cl)cc3Cl)o2)CC1
b: Cc1ccc(CCNC(=O)c2cc(-c3ccncc3)nc3ccccc23)cc1
Answer: a. CN1CCN(c2ccccc2NC(=O)c2ccc(-c3ccc(Cl)cc3Cl)o2)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#}
CN1CCN(c2ccccc2NC(=O)c2ccc(-c3ccc(Cl)cc3Cl)o2)CC1
CN1CCN(c2ccccc2NC(=O)c2ccc(-c3ccc(Cl)cc3Cl)o2)CC1
5-(2,4-dichlorophenyl)-N-[2-(4-methylpiperazin-1-yl)phenyl]furan-2-carboxamide