Task: Answer the MCQ question.
Query: Which drug exhibits a 21.565\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a: CCOC(=O)C(N)CSC1CC(=O)N(c2ccc(OC)cc2)C1=O.Cl
b: Oc1ccc2ccccc2c1C=Nc1ccccc1Br
Answer: a. CCOC(=O)C(N)CSC1CC(=O)N(c2ccc(OC)cc2)C1=O.Cl
{#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)C(N)CSC1CC(=O)N(c2ccc(OC)cc2)C1=O.Cl
CCOC(=O)C(N)CSC1CC(=O)N(c2ccc(OC)cc2)C1=O.Cl
ethyl 2-amino-3-[1-(4-methoxyphenyl)-2,5-dioxopyrrolidin-3-yl]sulfanylpropanoate;hydrochloride