Problem statement: Answer the multiple-choice question.
Question: Which compound exhibits a 6.862\% human ether-à-go-go related gene (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. CCn1c(C)c2c(C)nnc(C)c2c1C
b. Cc1cc(C)cc(C(=O)NCC(=O)OCc2c(C)noc2C)c1
Answer: a. CCn1c(C)c2c(C)nnc(C)c2c1C
{#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#}
CCn1c(C)c2c(C)nnc(C)c2c1C
CCn1c(C)c2c(C)nnc(C)c2c1C
6-ethyl-1,4,5,7-tetramethylpyrrolo[3,4-d]pyridazine