You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(furan-2-carbonyl)-N-(5-methylhexan-2-yl)-3,4-dihydro-1H-isoquinoline-3-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H28N2O3
assistant