You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
10-[3-(3-benzoyl-4-ethoxy-4-oxobutyl)sulfonylanilino]-16-[hydroxy(phenyl)methylidene]-8,15-dioxo-14-azatetracyclo[7.7.1.02,7.013,17]heptadeca-1(17),2,4,6,9,11,13-heptaene-12-sulfonic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C42H32N2O11S2
assistant