You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2S)-2-[[7-(furan-2-ylmethyl)-8-oxo-[1,3]dioxolo[4,5-g]quinazolin-6-yl]sulfanyl]-N-(2-methoxyphenyl)butanamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C25H23N3O6S
assistant