You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(6S)-4-propan-2-yl-1,11-dioxa-4,8-diazaspiro[5.6]dodecan-8-yl]-pyridazin-4-ylmethanone The above is the IUPAC name of a molecule. Write its molecular formula.
user
C16H24N4O3
assistant