Task: Answer the multiple choice question.
Query: Which compound exhibits a 10.164\% 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) COc1ncnc2c1NC(=O)CS2
(b) Cc1oc2cc(O)ccc2c(=O)c1-c1nncn1-c1ccccc1
Answer: a. COc1ncnc2c1NC(=O)CS2
{#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#}
COc1ncnc2c1NC(=O)CS2
COc1ncnc2c1NC(=O)CS2
4-methoxy-5H-pyrimido[4,5-b][1,4]thiazin-6-one