Task: Answer the MCQ question.
Query: Which drug exhibits a 4.738\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a: NNC(=O)c1cccnc1Oc1ccccc1
b: CCCCC(=O)Nc1cccc(-c2nn3c(C)nnc3s2)c1
Answer: a. NNC(=O)c1cccnc1Oc1ccccc1
{#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#}
NNC(=O)c1cccnc1Oc1ccccc1
NNC(=O)c1cccnc1Oc1ccccc1
2-phenoxypyridine-3-carbohydrazide