Task: Answer the MCQ question.
Query: Which compound has a 13.239\% human ether-à-go-go related gene (hERG) inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
a O=C(O)c1ccc2cccc(Cl)c2c1O
b CCOC(=O)N(CC)c1ccc(C(O)(C(=O)OCC)C(F)(F)F)cc1
Answer: a. O=C(O)c1ccc2cccc(Cl)c2c1O
{#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#}
O=C(O)c1ccc2cccc(Cl)c2c1O
O=C(O)c1ccc2cccc(Cl)c2c1O
8-chloro-1-hydroxynaphthalene-2-carboxylic acid