Problem statement: Answer the multiple choice question.
Question: Which compound exhibits a 2.782\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any additional words.
Options:
(a) CCc1cc2c(Nc3ccccc3O)nc(C)nc2s1.Cl
(b) CCCCOc1ncnc2c1[nH]c1ccc(C)cc12
(c) COc1ccc(C)cc1NC1=C(Cl)C(=O)N(C2CCCCC2)C1=O
Answer: b. CCCCOc1ncnc2c1[nH]c1ccc(C)cc12
{#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#}
CCCCOc1ncnc2c1[nH]c1ccc(C)cc12
CCCCOc1ncnc2c1[nH]c1ccc(C)cc12
4-butoxy-8-methyl-5H-pyrimido[5,4-b]indole