Task: Answer the MCQ question.
Query: Which drug has a 15.392\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
[a] COc1ccc(/C=N/n2c(C)nc3sc(C)c(C)c3c2=O)cc1
[b] CCc1c(-c2ccccc2)[n+](=O)c2c(n1[O-])CCC2
[c] O=C(O)CCSc1nnc(-c2ccccc2)n1-c1ccccc1
[d] Cc1ccc2c(c1)N(C(=O)CCC(=O)NCc1cccc(Br)c1)CC(C)O2
Answer: b. CCc1c(-c2ccccc2)[n+](=O)c2c(n1[O-])CCC2
{#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#}
CCc1c(-c2ccccc2)[n+](=O)c2c(n1[O-])CCC2
CCc1c(-c2ccccc2)[n+](=O)c2c(n1[O-])CCC2
2-ethyl-1-oxido-3-phenyl-6,7-dihydro-5H-cyclopenta[b]pyrazin-4-ium 4-oxide