Task: Answer the MCQ question.
Question: Which drug has a 0.473\% 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. CCOC(=O)c1sc2ncnc(N3CCN(C)CC3)c2c1C
b. COc1cc(C(=O)N2CCC(C(=O)Nc3cccc(C(C)=O)c3)CC2)cc(OC)c1OC
c. O=C(c1ccc([N+](=O)[O-])s1)N1CCN(c2ccccn2)CC1
d. CCCCN1C(=O)NC(=O)C2(Cc3ccccc3N3CCOCC32)C1=O
Answer: a. CCOC(=O)c1sc2ncnc(N3CCN(C)CC3)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(N3CCN(C)CC3)c2c1C
CCOC(=O)c1sc2ncnc(N3CCN(C)CC3)c2c1C
ethyl 5-methyl-4-(4-methylpiperazin-1-yl)thieno[2,3-d]pyrimidine-6-carboxylate