Task: Answer the MCQ question.
Question: Which drug exhibits a -0.290\% 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 other words.
Options:
[a] CCOC(=O)CC(=O)Nc1cc(Cl)ccc1O
[b] CC1CCN(CC(=O)n2c3c(c4ccccc42)CCCC3)CC1.Cl
[c] CC(C)(C)c1ccc(NC(=O)Cn2cnc3cc([N+](=O)[O-])ccc3c2=O)cc1
[d] Cc1ccc(-c2nn(-c3ccccc3)cc2CSC(=N)N)cc1.Cl
Answer: a. CCOC(=O)CC(=O)Nc1cc(Cl)ccc1O
{#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#}
ethyl 3-(5-chloro-2-hydroxyanilino)-3-oxopropanoate