You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule disodium;copper;3-[(2-hydroxy-5-sulfophenyl)hydrazinylidene]-4-oxo-7-[(2,5,6-trichloropyrimidin-4-yl)amino]naphthalene-2-sulfonic acid into molecular formula.
user
C20H12Cl3CuN5Na2O8S2+2
assistant