Task: Text Categorization
Input (English): It is one of the few groups that favor substitution on a cyclohexane ring in an axial position, due to steric considerations. When heated, they undergo the Curtius rearrangement and become isocyanate groups, which in the presence of water is converted to an amine group. Often used in explosive triggers due to their sensitivity, they behave much like halogens, since their instability makes their displacement easy. FTP, identify this chemical group, consisting of a chain of 3 nitrogen atoms.
Output (English): Science