Oberon™ 4 SC Insecticide/Miticide, is a formulated suspension concentrate pesticide that contains Spiromesifen as the active ingredient. Per your letter, Oberon™ is a spray-applied insecticide that is active against all mite developmental stages including eggs and controls resistant strains of mites and whiteflies. It is used to manage insects and mites on a broad range of crops such as cotton, corn, strawberries, potatoes, etc.
[1] Please importantly note that only the relevant portion of the related is displayed above. You may refer to the said customs ruling for the entire ruling explanation.
[1]. https://rulings.cbp.gov/ruling/N118375