Task: Answer the multiple-choice question.
Query: Which compound has a 23.558\% 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: CC(C)N1C(=O)C2(OCCCO2)c2cc(Br)ccc21
b: COc1ccc(C(=O)NCCc2ccc(C)cc2)cc1OC1CCN(C(C)=O)CC1
Answer: a. CC(C)N1C(=O)C2(OCCCO2)c2cc(Br)ccc21
{#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#}
CC(C)N1C(=O)C2(OCCCO2)c2cc(Br)ccc21
CC(C)N1C(=O)C2(OCCCO2)c2cc(Br)ccc21
5'-bromo-N-propan-2-ylspiro[1,3-dioxane-2,3'-indole]-2'-one