Task: Answer the multiple-choice question.
Question: Which drug exhibits a -9.904\% 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 COc1ccc(CNC(=O)COc2cccnc2[N+](=O)[O-])cc1
b C=CCn1c(NC(=O)c2ccccc2Cl)c(C#N)c2nc3ccccc3nc21
c NC1=NC(=O)C2(COC(c3cccc([N+](=O)[O-])c3)OC2)S1
d COc1ccccc1/C=N/NC(=O)c1csc(C)c1C
Answer: b. C=CCn1c(NC(=O)c2ccccc2Cl)c(C#N)c2nc3ccccc3nc21
{#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#}
C=CCn1c(NC(=O)c2ccccc2Cl)c(C#N)c2nc3ccccc3nc21
C=CCn1c(NC(=O)c2ccccc2Cl)c(C#N)c2nc3ccccc3nc21
2-chloro-N-(3-cyano-1-prop-2-enylpyrrolo[3,2-b]quinoxalin-2-yl)benzamide