Task: Answer the MCQ question.
Query: Which compound has a -0.660% hERG inhibition at a concentration of 10uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
(a) O=C(O)c1cnn(-c2ccccc2)c1C(F)(F)F
(b) Clc1cccc2sc(N3CCOCC3)nc12
Answer: b. Clc1cccc2sc(N3CCOCC3)nc12
{#Task|Problem statement!}: Answer the {#multiple choice|multiple-choice|MCQ!} question.
{#Question|Query!}: Which {#compound|drug!} {#has|exhibits!} a {herg_central_at_10uM#}{herg_central_at_10uM__units} {herg_central_at_10uM__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_10uM%}
Answer: {%multiple_choice_result}. {SMILES#}
Clc1cccc2sc(N3CCOCC3)nc12
Clc1cccc2sc(N3CCOCC3)nc12
4-(4-chloro-1,3-benzothiazol-2-yl)morpholine