Task: Answer the MCQ question.
Question: Which compound exhibits a -1.409\% 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(CSc1nnc(-c2ccc(F)cc2)c2ccccc12)Nc1c(F)cccc1F
[b] C=CCn1c(SCC(=O)c2c(N)n(C3CC3)c(=O)[nH]c2=O)nnc1-c1ccoc1C
Answer: a. O=C(CSc1nnc(-c2ccc(F)cc2)c2ccccc12)Nc1c(F)cccc1F
{#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#}
O=C(CSc1nnc(-c2ccc(F)cc2)c2ccccc12)Nc1c(F)cccc1F
O=C(CSc1nnc(-c2ccc(F)cc2)c2ccccc12)Nc1c(F)cccc1F
N-(2,6-difluorophenyl)-2-[4-(4-fluorophenyl)phthalazin-1-yl]sulfanylacetamide