Problem statement: Answer the multiple choice question.
Query: Which compound exhibits a -4.382\% 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. O=C(Nc1ccccc1F)Nc1ccccc1F
b. O=C(CN1C(=O)C2C3c4ccccc4C(c4ccccc43)C2C1=O)Nc1cccc(C(=O)O)c1
Answer: a. O=C(Nc1ccccc1F)Nc1ccccc1F
{#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(Nc1ccccc1F)Nc1ccccc1F
O=C(Nc1ccccc1F)Nc1ccccc1F
1,3-bis(2-fluorophenyl)urea