You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-(furan-2-ylmethyl)-N-methyl-2-[methyl-[(3S)-1-pyridazin-3-ylpiperidin-3-yl]amino]acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C18H25N5O2
assistant