Task: Answer the MCQ question.
Question: Which drug has a 4.198\% 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. O=C(CCc1nc2ccccc2n1-c1ccccc1)NCCO
b. CCOC(=O)CSc1nc(CC)nc2ccccc12
Answer: b. CCOC(=O)CSc1nc(CC)nc2ccccc12
{#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#}
CCOC(=O)CSc1nc(CC)nc2ccccc12
CCOC(=O)CSc1nc(CC)nc2ccccc12
ethyl 2-(2-ethylquinazolin-4-yl)sulfanylacetate