Task: Answer the MCQ question.
Query: Which drug has a 13.777\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any additional words.
Options:
a: O=C(COc1ccc([N+](=O)[O-])cc1)Nc1ccc2c(c1)OCO2
b: O=C(CCCl)N1CCCC2(CCCCC2)C1
c: O=C(c1ccc(=O)oc1)N1CCCc2ccccc21
Answer: b. O=C(CCCl)N1CCCC2(CCCCC2)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#}
1-(2-azaspiro[5.5]undecan-2-yl)-3-chloropropan-1-one