You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[1-[(4-bromophenyl)methyl]-5-[5-(4-methylpiperazin-1-yl)sulfonyl-2-propoxyphenyl]-7-oxo-3,6-dihydropyrazolo[4,3-d]pyrimidin-2-yl]acetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C28H34BrN7O5S
assistant