Task: Answer the multiple-choice question.
Question: Which compound exhibits a 4.606\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
[a] COc1cccc(Oc2cnc(N)nc2-c2ccc(OC)cc2O)c1
[b] CCCNC(=O)COC(=O)c1ccc(N2CCCC2)c([N+](=O)[O-])c1
Answer: a. COc1cccc(Oc2cnc(N)nc2-c2ccc(OC)cc2O)c1
{#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#}
COc1cccc(Oc2cnc(N)nc2-c2ccc(OC)cc2O)c1
COc1cccc(Oc2cnc(N)nc2-c2ccc(OC)cc2O)c1
2-[2-amino-5-(3-methoxyphenoxy)pyrimidin-4-yl]-5-methoxyphenol