You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-[2-methyl-6-(1-oxa-4,9-diazaspiro[5.5]undecan-9-yl)imidazo[1,2-b]pyridazin-3-yl]pyridin-2-amine;trihydrochloride is the IUPAC name of a molecule. Please give its molecular formula.
user
C20H28Cl3N7O
assistant