You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2-(6-methoxypyridin-3-yl)-1-(3-propan-2-yl-3-azabicyclo[3.1.1]heptan-6-yl)ethanone;3-methyl-1-(3-propan-2-yl-3-azabicyclo[3.1.1]heptan-6-yl)butan-1-one;2-phenyl-1-(3-propan-2-yl-3-azabicyclo[3.1.1]heptan-6-yl)ethanone by IUPAC nomenclature, provide its molecular formula.
user
C48H72N4O4
assistant