You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[2-[2-[2-(3-aminopiperidin-1-yl)-3-but-2-ynyl-4-oxoimidazo[4,5-d]pyridazin-5-yl]acetyl]phenyl]propanamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C25H29N7O3
assistant