Imidacloprid
Imidacloprid is a systemic insecticide that acts as an insect neurotoxin and belongs to a class of chemicals called the neonicotinoids which act on the central nervous system of insects . 
<triplet> Imidacloprid <subj> insecticide <obj> instance of <subj> neonicotinoid <obj> subclass of <triplet> neonicotinoid <subj> insecticide <obj> subclass of