You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
dimethyl 6-amino-1-(2-tert-butyl-1,3-dioxoisoindol-5-yl)-5-cyano-4-phenyl-4H-pyridine-2,3-dicarboxylate is the IUPAC name of a molecule. Please give its molecular formula.
user
C28H26N4O6
assistant