Task: Answer the multiple choice question.
Query: Which drug exhibits a -1.968\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any additional words.
Options:
a: O=C(O)c1cc(-c2ccccc2)n(-c2ccccc2)n1
b: Cc1c(Br)c([N+](=O)[O-])nn1C(C)C(=O)NCc1cccnc1
c: CCOC(=O)c1c(NC(=O)COC(=O)c2c(C)noc2C)sc2c1CCC2
Answer: a. O=C(O)c1cc(-c2ccccc2)n(-c2ccccc2)n1
{#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=C(O)c1cc(-c2ccccc2)n(-c2ccccc2)n1
O=C(O)c1cc(-c2ccccc2)n(-c2ccccc2)n1
1,5-diphenylpyrazole-3-carboxylicacid