Task: Answer the MCQ question.
Question: Which compound exhibits a 16.972\% 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=[N+]([O-])c1ccccc1CSc1ccccn1
b: COc1cccc(OC)c1C(=O)N1CCN(C(=O)c2ccc(-c3ccccc3)cc2)CC1
Answer: a. O=[N+]([O-])c1ccccc1CSc1ccccn1
{#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=[N+]([O-])c1ccccc1CSc1ccccn1
O=[N+]([O-])c1ccccc1CSc1ccccn1
2-[(2-nitrophenyl)methylsulfanyl]pyridine