Task: Answer the multiple-choice question.
Query: Which drug exhibits a -1.963\% 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(COC(=O)/C=C/c1cc(Br)ccc1F)Nc1ccc2[nH]c(=O)[nH]c2c1
b O=C(Nc1ccccc1)N1CCCC2CCCCC21
Answer: b. O=C(Nc1ccccc1)N1CCCC2CCCCC21
{#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(Nc1ccccc1)N1CCCC2CCCCC21
O=C(Nc1ccccc1)N1CCCC2CCCCC21
N-phenyl-3,4,4a,5,6,7,8,8a-octahydro-2H-quinoline-1-carboxamide