You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(4R)-5-ethoxycarbonyl-4-(furan-2-yl)-2-oxo-3,4-dihydro-1H-pyrimidin-6-yl]methyl-methyl-[(1R)-1,2,3,4-tetrahydronaphthalen-1-yl]azanium is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H28N3O4+
assistant