Task: Answer the multiple-choice question.
Question: Which drug exhibits a -26.529% hERG inhibition at a concentration of 10uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a. O=C(c1ccc(Cl)s1)N1CCN(c2ccccc2)CC1
b. CCOC(=O)c1ccc(COC(=O)CCc2nc3ccccc3[nH]c2=O)o1
Answer: a. O=C(c1ccc(Cl)s1)N1CCN(c2ccccc2)CC1
{#Task|Problem statement!}: Answer the {#multiple choice|multiple-choice|MCQ!} question.
{#Question|Query!}: Which {#compound|drug!} {#has|exhibits!} a {herg_central_at_10uM#}{herg_central_at_10uM__units} {herg_central_at_10uM__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_10uM%}
Answer: {%multiple_choice_result}. {SMILES#}
O=C(c1ccc(Cl)s1)N1CCN(c2ccccc2)CC1
O=C(c1ccc(Cl)s1)N1CCN(c2ccccc2)CC1
(5-chlorothiophen-2-yl)-(4-phenylpiperazin-1-yl)methanone