Problem statement: Answer the multiple-choice question.
Question: Which drug exhibits a 18.910\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any other words.
Options:
a) Cc1ccc(-c2nc3ccccc3nc2-c2ccccc2)cc1
b) CCOC(=O)c1c(NC(=O)C2COc3ccccc3O2)sc(C(C)=O)c1C
c) N#Cc1c(NC(=O)Cn2c(=O)oc3ccccc32)oc(-c2ccccc2)c1-c1ccccc1
Answer: a. Cc1ccc(-c2nc3ccccc3nc2-c2ccccc2)cc1
{#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#}
2-(4-methylphenyl)-3-phenylquinoxaline