You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[4-(hydroxyamino)-3-methyl-3-methylsulfonyl-1-[7-[4-(3-morpholin-4-ylpropoxy)phenyl]-4-oxoquinazolin-3-yl]-4-oxobutan-2-yl] formate is the IUPAC name of a molecule. Please give its molecular formula.
user
C28H34N4O9S
assistant