Problem statement: Answer the multiple-choice question.
Question: Which drug exhibits a 15.665\% 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=C(c1cc2cc(Cl)ccc2o1)N1CCCC1
b.) Nc1cc(-c2ccc(Br)cc2)nc2cc(-c3ccccc3)nn12
Answer: a. O=C(c1cc2cc(Cl)ccc2o1)N1CCCC1
{#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(c1cc2cc(Cl)ccc2o1)N1CCCC1
O=C(c1cc2cc(Cl)ccc2o1)N1CCCC1
(5-chloro-1-benzofuran-2-yl)-pyrrolidin-1-ylmethanone