Task: Answer the multiple-choice question.
Query: Which compound exhibits a 18.069\% 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=c1c2sc(-c3ccccc3)cc2nc2n1CCC2
b COc1ccccc1-c1sc2ccccc2c1-c1ccc(Br)nc1
Answer: b. COc1ccccc1-c1sc2ccccc2c1-c1ccc(Br)nc1
{#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#}
COc1ccccc1-c1sc2ccccc2c1-c1ccc(Br)nc1
COc1ccccc1-c1sc2ccccc2c1-c1ccc(Br)nc1
2-bromo-5-[2-(2-methoxyphenyl)-1-benzothiophen-3-yl]pyridine