You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 3,4-dimethoxy-N,N-dimethyl-9,16-dioxo-21-oxa-10,13,17-triazatetracyclo[16.6.2.12,6.022,26]heptacosa-1(25),2,4,6(27),22(26),23-hexaene-13-sulfonamide;formic acid into its molecular formula.
user
C28H38N4O9S
assistant