You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
7-acetyl-6-(5-methylthiophen-2-yl)-3-pentylsulfanyl-2,6-dihydro-[1,2,4]triazino[1,6-c]quinazolin-5-ium-1-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H25N4O2S2+
assistant