Task: Answer the multiple choice question.
Question: Which compound exhibits a 13.975\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a. O=C(c1cnn2c(C(F)(F)F)cc(-c3ccc4c(c3)OCO4)nc12)N1CCCCC1
b. O=Cc1c(Cl)nc2ccccn12
Answer: b. O=Cc1c(Cl)nc2ccccn12
{#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-chloroimidazo[1,2-a]pyridine-3-carbaldehyde