Task: Answer the MCQ question.
Question: Which compound exhibits a 12.530\% 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=c1c2cc(F)ccc2sn1-c1ccc(F)cc1
b: CN1CCN(NC(=S)Nc2ccc(OC(F)F)cc2)CC1
Answer: a. O=c1c2cc(F)ccc2sn1-c1ccc(F)cc1
{#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#}
O=c1c2cc(F)ccc2sn1-c1ccc(F)cc1
O=c1c2cc(F)ccc2sn1-c1ccc(F)cc1
5-fluoro-2-(4-fluorophenyl)-1,2-benzothiazol-3-one