Task: Answer the multiple-choice question.
Query: Which drug exhibits a 19.932\% 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] CC(C)=CC(=O)Nc1nnc(-c2cccnc2)s1
[b] COc1ccc(-c2nc(SCc3ccc(C#N)cc3)[nH]c(=O)c2C#N)cc1
[c] c1ccc(OCCCCn2cnc3ccccc32)cc1
[d] Cc1occc1C(=O)N1CCN(S(=O)(=O)c2ccccc2)CC1
Answer: a. CC(C)=CC(=O)Nc1nnc(-c2cccnc2)s1
{#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#}
CC(C)=CC(=O)Nc1nnc(-c2cccnc2)s1
CC(C)=CC(=O)Nc1nnc(-c2cccnc2)s1
3-methyl-N-(5-pyridin-3-yl-1,3,4-thiadiazol-2-yl)but-2-enamide