Task: Answer the multiple choice question.
Question: Which drug exhibits a 18.690\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a.) COc1ccc(C(=O)COC(=O)COc2cccc3c2OC(C)(C)C3)c(OC)c1
b.) COC(=O)C1=C(C)OC(N)=C(C#N)C1c1ccco1
Answer: b. COC(=O)C1=C(C)OC(N)=C(C#N)C1c1ccco1
{#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#}
COC(=O)C1=C(C)OC(N)=C(C#N)C1c1ccco1
COC(=O)C1=C(C)OC(N)=C(C#N)C1c1ccco1
methyl 6-amino-5-cyano-4-(furan-2-yl)-2-methyl-4H-pyran-3-carboxylate