Task: Answer the multiple-choice question.
Question: Which compound has a 4.975\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
[a] CC(=O)NS(=O)(=O)c1ccc(NC(=O)c2cc(-c3ccc(C)c(C)c3)nc3ccccc23)cc1
[b] O=Nc1c2nc3ccccc3n(O)c-2c2ccccc12
[c] Cn1c(SCC(=O)c2ccc3c(c2)NC(=O)CO3)nc2ccccc21
[d] CCC(=O)N1CCc2cc(Br)cc(S(=O)(=O)NCc3ccco3)c21
Answer: b. O=Nc1c2nc3ccccc3n(O)c-2c2ccccc12
{#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=Nc1c2nc3ccccc3n(O)c-2c2ccccc12
O=Nc1c2nc3ccccc3n(O)c-2c2ccccc12
5-hydroxy-11-nitrosoindeno[1,2-b]quinoxaline