Task: Answer the multiple-choice question.
Query: Which compound has a 21.040\% 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 other words.
Options:
[a] CCCCN(C(=O)/C=C/c1ccco1)c1c(N)n(CC(C)C)c(=O)[nH]c1=O
[b] CC(C)c1ccc(C(CC(=O)O)N2Cc3ccccc3C2=O)cc1
[c] Cc1ccc(CNc2oc(COc3ccccc3Cl)nc2C#N)cc1
[d] COc1ccc2nc(NC(=O)CSc3nnnn3C)sc2c1
Answer: a. CCCCN(C(=O)/C=C/c1ccco1)c1c(N)n(CC(C)C)c(=O)[nH]c1=O
{#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#}
CCCCN(C(=O)/C=C/c1ccco1)c1c(N)n(CC(C)C)c(=O)[nH]c1=O
CCCCN(C(=O)/C=C/c1ccco1)c1c(N)n(CC(C)C)c(=O)[nH]c1=O
(E)-N-[6-amino-1-(2-methylpropyl)-2,4-dioxopyrimidin-5-yl]-N-butyl-3-(furan-2-yl)prop-2-enamide