Problem statement: Answer the multiple-choice question.
Question: Which drug exhibits a 19.912\% 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: CCOC(=O)Nc1ccc([N+](=O)[O-])cc1OC
b: COCCOC(=O)C1=C(C)Nc2cc(=O)[nH]c(=O)n2C1c1cccc([N+](=O)[O-])c1
c: COc1ccc(C(=O)n2nc(-c3ccc(Cl)cc3)nc2N)cc1OC
d: CCN(CC)S(=O)(=O)c1cc(NC(=O)NCCCl)ccc1C
Answer: b. COCCOC(=O)C1=C(C)Nc2cc(=O)[nH]c(=O)n2C1c1cccc([N+](=O)[O-])c1
{#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#}
COCCOC(=O)C1=C(C)Nc2cc(=O)[nH]c(=O)n2C1c1cccc([N+](=O)[O-])c1
COCCOC(=O)C1=C(C)Nc2cc(=O)[nH]c(=O)n2C1c1cccc([N+](=O)[O-])c1
2-methoxyethyl 2-methyl-4-(3-nitrophenyl)-6,8-dioxo-1,4-dihydropyrimido[1,2-c]pyrimidine-3-carboxylate