Problem statement: Answer the multiple choice question.
Question: Which compound exhibits a 12.128\% 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] Cc1nnc(N)nc1C
[b] Cc1ccc(C)c(-n2nnnc2SCC(=O)Nc2c(C)n(C)n(-c3ccccc3)c2=O)c1
[c] O=S(=O)(c1cnc(Cl)c(Cl)c1)N1CCN(c2ncccn2)CC1
[d] CCC(C)NS(=O)(=O)c1ccc(OCC(=O)NCc2ccco2)cc1
Answer: a. Cc1nnc(N)nc1C
{#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#}
Cc1nnc(N)nc1C
Cc1nnc(N)nc1C
5,6-dimethyl-1,2,4-triazin-3-amine