You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[(2R)-3-methyl-2-morpholin-4-ylbutyl]-8-propan-2-yl-[1,2,4]triazolo[4,3-b]pyridazine-6-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C18H28N6O2
assistant