Task: Answer the multiple choice question.
Question: Which drug has a 18.291\% 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 CC1=C(C(=O)Nc2ccccc2)C(c2ccncc2)C(C#N)=C(SCC(=O)NC2CC2)N1
b FC(F)(F)c1ccccc1CCN1CCNCC1
Answer: b. FC(F)(F)c1ccccc1CCN1CCNCC1
{#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#}
FC(F)(F)c1ccccc1CCN1CCNCC1
FC(F)(F)c1ccccc1CCN1CCNCC1
1-[2-[2-(trifluoromethyl)phenyl]ethyl]piperazine