Task: Answer the multiple choice question.
Question: Which drug exhibits a 5.338\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
a. O=C(NCCc1ccccc1)[C@@H]1CC=C[C@@H]2CCN(Cc3ccccc3)C(=O)[C@@H]21
b. O=C(OCc1cc2ccccc2[nH]c1=O)c1ccc([N+](=O)[O-])cc1
c. NC(=O)NC(=O)C(Nc1ccc(N2CCCCC2)cc1)c1ccccc1
d. Cc1ccc(CN(C)C(=O)CN2C(=O)NC(c3ccccc3)(c3ccccc3)C2=O)c(C)c1
Answer: b. O=C(OCc1cc2ccccc2[nH]c1=O)c1ccc([N+](=O)[O-])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=C(OCc1cc2ccccc2[nH]c1=O)c1ccc([N+](=O)[O-])cc1
O=C(OCc1cc2ccccc2[nH]c1=O)c1ccc([N+](=O)[O-])cc1
(2-oxo-1H-quinolin-3-yl)methyl 4-nitrobenzoate