Task: Answer the multiple-choice question.
Query: Which compound exhibits a 20.638\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any other words.
Options:
[a] Cc1cc(C=O)c(O)cc1O
[b] Cc1cnc(C(=O)Nc2cc(F)ccc2C)cn1
[c] Cc1sc(C(=O)NCc2cccnc2)c2nc(C)n(CC(=O)NCc3cccnc3)c(=O)c12
Answer: b. Cc1cnc(C(=O)Nc2cc(F)ccc2C)cn1
{#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#}
Cc1cnc(C(=O)Nc2cc(F)ccc2C)cn1
Cc1cnc(C(=O)Nc2cc(F)ccc2C)cn1
N-(5-fluoro-2-methylphenyl)-5-methylpyrazine-2-carboxamide