Task: Answer the MCQ question.
Question: Which drug exhibits a 9.496\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
a. NS(=O)(=O)c1ccc(CCNC(=O)C2Cc3ccccc3CN2C(=O)c2ccco2)cc1
b. CCOC(=O)CC(=O)CSc1nc(-c2ccccc2)cc(-c2ccc(Cl)cc2)c1C#N
c. COc1ccccc1NC(=O)CCCN1C(=O)C(c2ccccc2)Oc2cccnc21
d. CCOC(=O)C1=C(O)/C(=C/c2ccccn2)SC1=Nc1ccc(Cl)cc1
Answer: b. CCOC(=O)CC(=O)CSc1nc(-c2ccccc2)cc(-c2ccc(Cl)cc2)c1C#N
{#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)CC(=O)CSc1nc(-c2ccccc2)cc(-c2ccc(Cl)cc2)c1C#N
CCOC(=O)CC(=O)CSc1nc(-c2ccccc2)cc(-c2ccc(Cl)cc2)c1C#N
4-(4-chlorophenyl)-2-(4-ethoxy-2,4-dioxobutyl)sulfanyl-6-phenylpyridine-3-carbonitrile