Task: Answer the multiple choice question.
Question: Which drug has a 8.880\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
(a) O=c1[nH]cnc2ncc(-c3ccc(O)cc3)nc12
(b) COc1ccc(CCn2nnnc2C(CC(C)C)N2CCC(C(N)=O)CC2)cc1OC
Answer: a. O=c1[nH]cnc2ncc(-c3ccc(O)cc3)nc12
{#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=c1[nH]cnc2ncc(-c3ccc(O)cc3)nc12
O=c1[nH]cnc2ncc(-c3ccc(O)cc3)nc12
6-(4-hydroxyphenyl)-3H-pteridin-4-one