Task: Answer the multiple choice question.
Query: Which compound exhibits a 6.500\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
[a] O=[N+]([O-])c1cccc(CSC2=NCCN2S(=O)(=O)c2ccccc2)c1
[b] C=CCc1ccccc1OCCOc1ccc([N+](=O)[O-])cc1/C=N/NC(N)=O
Answer: b. C=CCc1ccccc1OCCOc1ccc([N+](=O)[O-])cc1/C=N/NC(N)=O
{#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=CCc1ccccc1OCCOc1ccc([N+](=O)[O-])cc1/C=N/NC(N)=O
C=CCc1ccccc1OCCOc1ccc([N+](=O)[O-])cc1/C=N/NC(N)=O
[(E)-[5-nitro-2-[2-(2-prop-2-enylphenoxy)ethoxy]phenyl]methylideneamino]urea