Task: Answer the multiple-choice question.
Question: Which drug has a -5.738\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, c, d, or e without using any other words.
Options:
a) Cn1cnnc1SCc1nc(N)nc(Nc2ccccc2)n1
b) Cc1nc2ccc(Br)cn2c1NC(C)(C)C
c) CCCOc1ccc(NC(=O)C2CC(=O)N3CCCN=C3S2)cc1
d) Cc1nc2ccc(NC(=O)N3CCSCC3)cc2s1
e) O=C(CCSCCc1ccccn1)Nc1nccs1
Answer: b. Cc1nc2ccc(Br)cn2c1NC(C)(C)C
{#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#}
6-bromo-N-tert-butyl-2-methylimidazo[1,2-a]pyridin-3-amine