Task: Answer the multiple-choice question.
Question: Which drug has a -2.191% hERG inhibition at a concentration of 10uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any other words.
Options:
a. COc1cc(OC)c(C(=O)CCC(=O)O)cc1OC
b. O=C1NS(=O)c2cc([N+](=O)[O-])cc([N+](=O)[O-])c21
c. O=C(O)c1cccc(N2C(=O)c3ccc(C(=O)c4cccc([N+](=O)[O-])c4)cc3C2=O)c1
d. CCOC(=O)C(c1ccccc1)C(Nc1ccc(F)cc1)c1ccccn1
Answer: a. COc1cc(OC)c(C(=O)CCC(=O)O)cc1OC
{#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#}
COc1cc(OC)c(C(=O)CCC(=O)O)cc1OC
COc1cc(OC)c(C(=O)CCC(=O)O)cc1OC
4-oxo-4-(2,4,5-trimethoxyphenyl)butanoic acid