Task: Answer the multiple-choice question.
Query: Which compound exhibits a 13.860\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
(a) O=c1cc(CN2CCOCC2)c2cc(Cl)ccc2o1
(b) CSc1ccc(CCNC(=O)c2cc(-c3ccccc3)c(N3CCOCC3)s2)cc1
Answer: a. O=c1cc(CN2CCOCC2)c2cc(Cl)ccc2o1
{#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=c1cc(CN2CCOCC2)c2cc(Cl)ccc2o1
O=c1cc(CN2CCOCC2)c2cc(Cl)ccc2o1
6-chloro-4-(morpholin-4-ylmethyl)chromen-2-one