Task: Answer the multiple-choice question.
Query: Which drug exhibits a 22.278\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a COc1ccc(/C(N)=N/OC(=O)C2CCC(=O)N2S(=O)(=O)c2ccc(C)cc2)cc1
b COc1cccc2c1OCC(C(=O)O)C2
Answer: b. COc1cccc2c1OCC(C(=O)O)C2
{#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#}
COc1cccc2c1OCC(C(=O)O)C2
COc1cccc2c1OCC(C(=O)O)C2
8-methoxy-3,4-dihydro-2H-chromene-3-carboxylic acid