Task: Answer the multiple-choice question.
Query: Which drug exhibits a -73.746\% 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) CCCCCCN1C2=NCCCN2c2ccccc21.Cl
(b) C=CCn1c(SCC(=O)NCC2CCCO2)nnc1-c1ccccc1
Answer: a. CCCCCCN1C2=NCCCN2c2ccccc21.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#}
CCCCCCN1C2=NCCCN2c2ccccc21.Cl
CCCCCCN1C2=NCCCN2c2ccccc21.Cl
10-hexyl-3,4-dihydro-2H-pyrimido[1,2-a]benzimidazole;hydrochloride