Task: Answer the multiple choice question.
Question: Which drug exhibits a 4.957\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
[a] Cl.Nc1cccc(Nc2ncnc3ccccc23)c1
[b] Cc1sc2nc(CN3CCC(C)CC3)nc(Cl)c2c1C
Answer: b. Cc1sc2nc(CN3CCC(C)CC3)nc(Cl)c2c1C
{#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#}
Cc1sc2nc(CN3CCC(C)CC3)nc(Cl)c2c1C
Cc1sc2nc(CN3CCC(C)CC3)nc(Cl)c2c1C
4-chloro-5,6-dimethyl-2-[(4-methylpiperidin-1-yl)methyl]thieno[2,3-d]pyrimidine