Task: Answer the multiple-choice question.
Query: Which drug exhibits a -12.793% hERG inhibition at 10uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
[a] CC1CCC(C(C)C)C(OP(=O)(c2ccccc2)C(O)c2ccncc2)C1
[b] COC(=O)CSc1nc2sc(C)c(C)c2c(=O)n1C
Answer: b. COC(=O)CSc1nc2sc(C)c(C)c2c(=O)n1C
{#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#}
COC(=O)CSc1nc2sc(C)c(C)c2c(=O)n1C
COC(=O)CSc1nc2sc(C)c(C)c2c(=O)n1C
methyl 2-(3,5,6-trimethyl-4-oxothieno[2,3-d]pyrimidin-2-yl)sulfanylacetate