Task: Answer the multiple-choice question.
Question: Which compound has a -20.046% hERG inhibition at a concentration of 10uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
[a] COc1ccc(C2OC3=C(Nc4cc(C)c(C)cc4N3)C2=O)cc1
[b] COc1ccc2c(c1)[nH]c1c(N3CCSCC3)ncnc12
Answer: b. COc1ccc2c(c1)[nH]c1c(N3CCSCC3)ncnc12
{#Task|Problem statement!}: Answer the {#multiple choice|multiple-choice|MCQ!} question.
{#Question|Query!}: Which {#compound|drug!} {#has|exhibits!} a {herg_central_at_10uM#}{herg_central_at_10uM__units} {herg_central_at_10uM__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_10uM%}
Answer: {%multiple_choice_result}. {SMILES#}
COc1ccc2c(c1)[nH]c1c(N3CCSCC3)ncnc12
COc1ccc2c(c1)[nH]c1c(N3CCSCC3)ncnc12
4-(7-methoxy-5H-pyrimido[5,4-b]indol-4-yl)-1,4-thiazinane