Task: Answer the multiple choice question.
Question: Which compound exhibits a 4.147\% 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: C#CCOCCOCCOCCNc1nc(N2CCN(C(=O)[C@H](CCCCN)n3cc(C(N)CC(C)C)nn3)CC2)nc(N2CCN(C(=O)[C@H](CCC(=O)O)n3cc(C(N)[C@H](C)CC)nn3)CC2)n1.Cl
b: COc1ccc2nc3cccc(OC)c3nc2c1
Answer: b. COc1ccc2nc3cccc(OC)c3nc2c1
{#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#}
COc1ccc2nc3cccc(OC)c3nc2c1
COc1ccc2nc3cccc(OC)c3nc2c1
1,8-dimethoxyphenazine