Task: Answer the multiple-choice question.
Question: Which drug has a 2.906\% 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: CS(=O)(=O)Nc1ccccc1Oc1ccccc1
b: COc1ccc(-c2nc3c4ccccc4ccn3c2CN2CCOCC2)cc1OC.Cl
Answer: b. COc1ccc(-c2nc3c4ccccc4ccn3c2CN2CCOCC2)cc1OC.Cl
{#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#}
4-[[2-(3,4-dimethoxyphenyl)imidazo[2,1-a]isoquinolin-3-yl]methyl]morpholine;hydrochloride