Problem statement: Answer the multiple-choice question.
Question: Which compound exhibits a 4.376\% 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) CCCc1cc(=O)oc2cc(OCC(=O)Nc3ccc4c(c3)OCCO4)ccc12
(b) CCCCNC(=O)NCC(=O)Nc1ccc(F)c(F)c1
Answer: b. CCCCNC(=O)NCC(=O)Nc1ccc(F)c(F)c1
{#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#}
CCCCNC(=O)NCC(=O)Nc1ccc(F)c(F)c1
CCCCNC(=O)NCC(=O)Nc1ccc(F)c(F)c1
[C][C][C][C][N][C][=Branch1][C][=O][N][C][C][=Branch1][C][=O][N][C][=C][C][=C][Branch1][C][F][C][Branch1][C][F][=C][Ring1][Branch2]
2-(butylcarbamoylamino)-N-(3,4-difluorophenyl)acetamide