Task: Answer the MCQ question.
Question: Which compound exhibits a 19.779\% 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)Oc1ccc2c(=O)c(-c3ccc4ccccc4n3)c(CC)oc2c1C
b. O=C(NCc1ccco1)c1cc2ccccc2c(=O)o1
Answer: a. CCC(=O)Oc1ccc2c(=O)c(-c3ccc4ccccc4n3)c(CC)oc2c1C
{#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)Oc1ccc2c(=O)c(-c3ccc4ccccc4n3)c(CC)oc2c1C
CCC(=O)Oc1ccc2c(=O)c(-c3ccc4ccccc4n3)c(CC)oc2c1C
(2-ethyl-8-methyl-4-oxo-3-quinolin-2-ylchromen-7-yl) propanoate