Task: Answer the multiple-choice question.
Question: Which compound exhibits a 1.867\% 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. O=C(Nc1cccc(C(=O)O)c1)/C(=C\c1ccc2c(c1)OCO2)NC(=O)c1ccc(Br)o1
b. COc1cc(Cn2c(-c3nonc3N)nc3ccccc32)ccc1C
Answer: b. COc1cc(Cn2c(-c3nonc3N)nc3ccccc32)ccc1C
{#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#}
COc1cc(Cn2c(-c3nonc3N)nc3ccccc32)ccc1C
COc1cc(Cn2c(-c3nonc3N)nc3ccccc32)ccc1C
4-[1-[(3-methoxy-4-methylphenyl)methyl]benzimidazol-2-yl]-1,2,5-oxadiazol-3-amine