Task: Answer the multiple-choice question.
Query: Which compound exhibits a 2.690\% human ether-à-go-go related gene (hERG) inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any additional words.
Options:
a. CCCC1NC(=O)NC(C)=C1C(=O)OCC
b. O=C(NCCC(=O)N(Cc1ccco1)Cc1cccs1)c1ccc(Br)cc1
c. COc1cc(Cl)c(C)cc1NC(=O)CC1SC(N2CCOCC2)=NC1=O
Answer: a. CCCC1NC(=O)NC(C)=C1C(=O)OCC
{#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#}
CCCC1NC(=O)NC(C)=C1C(=O)OCC
CCCC1NC(=O)NC(C)=C1C(=O)OCC
ethyl 6-methyl-2-oxo-4-propyl-3,4-dihydro-1H-pyrimidine-5-carboxylate