Task: Answer the multiple choice question.
Query: Which drug has a -64.774% 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] CCOC(=O)CC(=O)CSc1nc2ccc(C)cc2cc1C#N
[b] COc1ccc(Nc2nnc(-c3ccc(O)cc3)c3ccccc23)cc1
Answer: b. COc1ccc(Nc2nnc(-c3ccc(O)cc3)c3ccccc23)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#}
COc1ccc(Nc2nnc(-c3ccc(O)cc3)c3ccccc23)cc1
COc1ccc(Nc2nnc(-c3ccc(O)cc3)c3ccccc23)cc1
4-[4-(4-methoxyanilino)phthalazin-1-yl]phenol