Task: Answer the multiple choice question.
Query: Which compound exhibits a -4.728\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a: CN1CCN(C(=O)c2cc(COc3c(F)cccc3F)on2)CC1c1ccccc1
b: NC(=O)c1ccsc1NC(=O)COC(=O)c1ccc([N+](=O)[O-])o1
Answer: b. NC(=O)c1ccsc1NC(=O)COC(=O)c1ccc([N+](=O)[O-])o1
{#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#}
NC(=O)c1ccsc1NC(=O)COC(=O)c1ccc([N+](=O)[O-])o1
NC(=O)c1ccsc1NC(=O)COC(=O)c1ccc([N+](=O)[O-])o1
[2-[(3-carbamoylthiophen-2-yl)amino]-2-oxoethyl] 5-nitrofuran-2-carboxylate