Problem statement: Answer the multiple-choice question.
Question: Which compound has a 2.164\% 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) CCCC1C2CN(C(C)=O)CC=C2C(C#N)=C(N)C1(C#N)C#N
b) O=C(Nc1nnc(-c2ccccc2)o1)Nc1ccc(F)cc1F
Answer: b. O=C(Nc1nnc(-c2ccccc2)o1)Nc1ccc(F)cc1F
{#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(Nc1nnc(-c2ccccc2)o1)Nc1ccc(F)cc1F
O=C(Nc1nnc(-c2ccccc2)o1)Nc1ccc(F)cc1F
1-(2,4-difluorophenyl)-3-(5-phenyl-1,3,4-oxadiazol-2-yl)urea