Task: Answer the multiple choice question.
Question: Which compound exhibits a 3.387\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, c, d, or e without using any additional words.
Options:
a. Cc1cc2oc(=O)cc(CN3CCOCC3)c2cc1C(C)C
b. CCOC(=O)c1sc2ncnc(NCc3ccco3)c2c1C
c. O=C(O)C1CCN(S(=O)(=O)N2CCOCC2)CC1
d. N#CCCN(C(=O)CSc1ncccn1)c1ccc2c(c1)OCCO2
e. COc1cc(C(C(=O)NC2CCCC2)N(C(=O)Cc2cccs2)C2CC2)cc(OC)c1OC
Answer: b. CCOC(=O)c1sc2ncnc(NCc3ccco3)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#}
CCOC(=O)c1sc2ncnc(NCc3ccco3)c2c1C
CCOC(=O)c1sc2ncnc(NCc3ccco3)c2c1C
ethyl 4-(furan-2-ylmethylamino)-5-methylthieno[2,3-d]pyrimidine-6-carboxylate