Problem statement: Answer the multiple-choice question.
Question: Which drug exhibits a 16.963\% 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) O=C(COc1ccc(Br)cc1)NCCCNC(=O)c1ccncc1
b) C1=C(c2ccccc2)Nc2nnnn2C1
c) Br.CCn1c(=N)n(CC(=O)c2cccc([N+](=O)[O-])c2)c2ccccc21
Answer: b. C1=C(c2ccccc2)Nc2nnnn2C1
{#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#}
C1=C(c2ccccc2)Nc2nnnn2C1
C1=C(c2ccccc2)Nc2nnnn2C1
5-phenyl-4,7-dihydrotetrazolo[1,5-a]pyrimidine