Task: Answer the multiple choice question.
Question: Which compound exhibits a 0.757\% human ether-à-go-go related gene (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) O=S(=O)(Nc1ccc(S(=O)(=O)N2CCOCC2)cc1)c1ccccc1
b) CCOC(=O)C(C)On1c(-c2ccc(Cl)cc2)nc2ccc([N+](=O)[O-])cc21
Answer: b. CCOC(=O)C(C)On1c(-c2ccc(Cl)cc2)nc2ccc([N+](=O)[O-])cc21
{#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#}
CCOC(=O)C(C)On1c(-c2ccc(Cl)cc2)nc2ccc([N+](=O)[O-])cc21
CCOC(=O)C(C)On1c(-c2ccc(Cl)cc2)nc2ccc([N+](=O)[O-])cc21
ethyl 2-[2-(4-chlorophenyl)-6-nitrobenzimidazol-1-yl]oxypropanoate