Task: Answer the multiple-choice question.
Query: Which drug exhibits a 2.909\% 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) COCCNc1oc(-c2cccs2)nc1S(=O)(=O)c1ccc(C)cc1
b) NCCNc1cc(N2CCCC2)ccc1[N+](=O)[O-]
Answer: b. NCCNc1cc(N2CCCC2)ccc1[N+](=O)[O-]
{#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#}
NCCNc1cc(N2CCCC2)ccc1[N+](=O)[O-]
NCCNc1cc(N2CCCC2)ccc1[N+](=O)[O-]
[2-(2-aminoethylamino)-4-pyrrolidin-1-ylphenyl]-oxido-oxoazanium