Task: Answer the multiple choice question.
Question: Which drug exhibits a 4.513\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any other words.
Options:
a) COc1ccc(-c2cc(-c3ccccc3)nc(Cl)n2)cc1OC
b) Cc1cccc(CN2CCNC2=O)c1
c) CCOC(=O)c1ccc(NC(=S)NNC(=O)c2cc(-c3cccnc3)nc3ccccc23)cc1
d) CC(=O)C1=C(C)OC(N)=C(C#N)C1c1cc([N+](=O)[O-])ccc1Cl
Answer: d. CC(=O)C1=C(C)OC(N)=C(C#N)C1c1cc([N+](=O)[O-])ccc1Cl
{#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#}
CC(=O)C1=C(C)OC(N)=C(C#N)C1c1cc([N+](=O)[O-])ccc1Cl
CC(=O)C1=C(C)OC(N)=C(C#N)C1c1cc([N+](=O)[O-])ccc1Cl
5-acetyl-2-amino-4-(2-chloro-5-nitrophenyl)-6-methyl-4H-pyran-3-carbonitrile