Task: Answer the multiple-choice question.
Query: Which compound has a 18.841\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
(a) CCC(=O)Nc1ccc(C(=O)Nc2c[nH]c(=O)[nH]c2=O)cc1
(b) COc1ccc(CSC2=NCCN2)cc1Br
Answer: a. CCC(=O)Nc1ccc(C(=O)Nc2c[nH]c(=O)[nH]c2=O)cc1
{#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#}
CCC(=O)Nc1ccc(C(=O)Nc2c[nH]c(=O)[nH]c2=O)cc1
CCC(=O)Nc1ccc(C(=O)Nc2c[nH]c(=O)[nH]c2=O)cc1
N-(2,4-dioxo-1H-pyrimidin-5-yl)-4-(propanoylamino)benzamide