Task: Answer the MCQ question.
Query: Which compound exhibits a -3.715\% 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 additional words.
Options:
a. COc1cc2nc3occc3c(OC)c2cc1OC
b. O=C(NCc1cccc2ccsc12)c1cccs1
Answer: a. COc1cc2nc3occc3c(OC)c2cc1OC
{#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#}
COc1cc2nc3occc3c(OC)c2cc1OC
COc1cc2nc3occc3c(OC)c2cc1OC
4,6,7-trimethoxyfuro[2,3-b]quinoline