Task: Answer the multiple-choice question.
Question: Which compound exhibits a -2.180\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
a) O=C(NCCN1CCCCC1)Nc1ccccc1
b) COC(=O)C1=NNC2(c3ccc(Cl)cc3)C(=O)N(c3ccccc3)C(=O)C12
Answer: a. O=C(NCCN1CCCCC1)Nc1ccccc1
{#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(NCCN1CCCCC1)Nc1ccccc1
O=C(NCCN1CCCCC1)Nc1ccccc1
1-phenyl-3-(2-piperidin-1-ylethyl)urea