Task: Answer the multiple-choice question.
Question: Which drug exhibits a 18.380\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a. CCN1CCN(C(=O)c2ccc3c(Cl)c4c(nc3c2)CCCC4)CC1
b. Nc1cccc2cnccc12
Answer: b. Nc1cccc2cnccc12
{#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#}
Nc1cccc2cnccc12
Nc1cccc2cnccc12
isoquinolin-5-amine