Task: Answer the multiple choice question.
Query: Which compound exhibits a 2.531\% 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 other words.
Options:
a. O=C(Cn1cnc2ccccc21)c1ccc(Br)cc1
b. N#Cc1cccc(Cn2nnc(-c3ccccc3)n2)c1
c. O=C(Nc1ccc([N+](=O)[O-])cc1)Nc1ccc(N2CCOCC2)c2nonc12
d. C/C(N)=C(/C#N)C(=O)COC(=O)CNS(=O)(=O)c1ccc(F)c(F)c1F
Answer: b. N#Cc1cccc(Cn2nnc(-c3ccccc3)n2)c1
{#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#}
3-[(5-phenyltetrazol-2-yl)methyl]benzonitrile