Task: Answer the MCQ question.
Query: Which compound exhibits a 19.520\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any other words.
Options:
[a] O=C1/C(=C/c2ccc([N+](=O)[O-])cc2)N2CCC1CC2
[b] C=C(c1ccccc1C)[n+]1ccccc1
[c] Cc1ccc(S(=O)(=O)N2CCC(C(=O)OCC(=O)N3CCCC(C)C3)CC2)cc1C
Answer: b. C=C(c1ccccc1C)[n+]1ccccc1
{#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=C(c1ccccc1C)[n+]1ccccc1
C=C(c1ccccc1C)[n+]1ccccc1
1-[1-(2-methylphenyl)ethenyl]pyridin-1-ium