Problem statement: Answer the multiple-choice question.
Query: Which compound exhibits a 21.018\% 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) CC(=O)C1=C(c2ccccc2)N(C(C)=O)n2c(C)nnc2S1
b) C=CCc1ccccc1OCC(O)CN1CCOCC1
c) COc1cc(-n2nnnc2SC)c(OC)cc1Cl
Answer: c. COc1cc(-n2nnnc2SC)c(OC)cc1Cl
{#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#}
COc1cc(-n2nnnc2SC)c(OC)cc1Cl
COc1cc(-n2nnnc2SC)c(OC)cc1Cl
1-(4-chloro-2,5-dimethoxyphenyl)-5-methylsulfanyltetrazole