Task: Answer the MCQ question.
Question: Which compound exhibits a 12.918\% 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=S1(=O)CCC(NCC2CCCO2)C1
b) CCOC(=O)C1=C(C)N(CCCC(=O)O)C(=O)NC1c1ccc2ccccc2c1
Answer: a. O=S1(=O)CCC(NCC2CCCO2)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#}
O=S1(=O)CCC(NCC2CCCO2)C1
O=S1(=O)CCC(NCC2CCCO2)C1
1,1-dioxo-N-(oxolan-2-ylmethyl)thiolan-3-amine