Task: Answer the multiple choice question.
Query: Which drug has a 19.428\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a FC(F)(F)c1nnc2c3ccccc3c(Cl)nn12
b O=C(c1ccccc1Br)N(Cc1ccccc1)c1ccccc1
Answer: a. FC(F)(F)c1nnc2c3ccccc3c(Cl)nn12
{#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#}
FC(F)(F)c1nnc2c3ccccc3c(Cl)nn12
FC(F)(F)c1nnc2c3ccccc3c(Cl)nn12
6-chloro-3-(trifluoromethyl)-[1,2,4]triazolo[3,4-a]phthalazine