Problem statement: Answer the MCQ question.
Query: Which drug exhibits a -0.843\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
a: CC1=NN(c2ccccc2)C(=O)C1N=Nc1cccc(O)c1
b: CC(=O)OC(C#CCN1CCOCC1)c1ccccc1
Answer: b. CC(=O)OC(C#CCN1CCOCC1)c1ccccc1
{#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#}
(4-morpholin-4-yl-1-phenylbut-2-ynyl) acetate