Task: Answer the multiple choice question.
Query: Which drug has a 5.514\% 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] CCCCCn1c(=O)[nH]c2c(c1=O)CCC2
[b] O=[N+]([O-])c1ccccc1NCc1c(O)ccc2ccccc12
Answer: a. CCCCCn1c(=O)[nH]c2c(c1=O)CCC2
{#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#}
CCCCCn1c(=O)[nH]c2c(c1=O)CCC2
CCCCCn1c(=O)[nH]c2c(c1=O)CCC2
3-pentyl-1,5,6,7-tetrahydrocyclopenta[d]pyrimidine-2,4-dione