Task: Answer the multiple-choice question.
Question: Which drug exhibits a 13.898\% 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. CCn1cc(C(=O)OCC(=O)N(C)C2CCS(=O)(=O)C2)c(=O)c2ccc(C)nc21
b. O=C(NCC(c1cccs1)N1CCOCC1)c1cc([N+](=O)[O-])cc([N+](=O)[O-])c1
Answer: b. O=C(NCC(c1cccs1)N1CCOCC1)c1cc([N+](=O)[O-])cc([N+](=O)[O-])c1
{#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(NCC(c1cccs1)N1CCOCC1)c1cc([N+](=O)[O-])cc([N+](=O)[O-])c1
O=C(NCC(c1cccs1)N1CCOCC1)c1cc([N+](=O)[O-])cc([N+](=O)[O-])c1
N-(2-morpholin-4-yl-2-thiophen-2-ylethyl)-3,5-dinitrobenzamide