You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 4-(furan-2-carbonyl)-N'-methyl-N-[(1-propylpiperidin-4-yl)methyl]piperazine-1-carboximidamide by IUPAC nomenclature, provide its molecular formula.
user
C20H33N5O2
assistant