Problem statement: Answer the MCQ question.
Question: Which compound has a 12.850\% 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(NC(=S)Nc1ccccc1N1CCCC1)c1cccs1
[b] CCc1ccc(CN(C)C(=O)CCc2nnc(CCc3ccccc3OC)o2)nc1
[c] Cc1ccc(/C=N/OC(=O)c2nn(C)cc2Cl)cc1
[d] CCOn1c(=O)c[n+]([O-])c2ccccc21
Answer: d. CCOn1c(=O)c[n+]([O-])c2ccccc21
{#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#}
CCOn1c(=O)c[n+]([O-])c2ccccc21
CCOn1c(=O)c[n+]([O-])c2ccccc21
1-ethoxy-4-oxidoquinoxalin-4-ium-2-one