Problem statement: Answer the multiple choice question.
Query: Which drug exhibits a -5.214\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any other words.
Options:
[a] COCCCN(C(=S)NC(=O)C(C)(C)C)c1c(N)n(Cc2ccccc2)c(=O)[nH]c1=O
[b] CN1CCN(C(=O)COc2ccc3ccccc3c2Br)CC1
[c] O=[N+]([O-])c1ccc2oc(-c3cccc(O)c3)nc2c1
[d] C#CCSc1nnc(-c2ccc(C)cc2)o1
Answer: c. O=[N+]([O-])c1ccc2oc(-c3cccc(O)c3)nc2c1
{#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-])c1ccc2oc(-c3cccc(O)c3)nc2c1
O=[N+]([O-])c1ccc2oc(-c3cccc(O)c3)nc2c1
3-(5-nitro-1,3-benzoxazol-2-yl)phenol