You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
10-[3-[4-[2-(dimethylamino)ethoxy]phenyl]propyl]-7,8-dimethyl-2,3-dihydrobenzo[g]pteridin-4-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C25H31N5O2
assistant