Problem statement: Answer the multiple choice question.
Query: Which compound exhibits a 2.169\% 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.) COC1OC(CO)C(O)C(O)C1O
b.) O=C(NC1CCCCC1)C(c1ccc2ncccc2c1)N(Cc1ccc(F)cc1)C(=O)c1ccc2c(c1)OCCO2
Answer: a. COC1OC(CO)C(O)C(O)C1O
{#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#}
2-(hydroxymethyl)-6-methoxyoxane-3,4,5-triol