You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named 2-[4,7-bis(carboxymethyl)-1,4,7-triazonan-1-yl]-5-[2-[[(2Z)-2-hydrazinylidene-3-methylbutylidene]amino]ethylamino]-5-oxopentanoic acid is given. What is its corresponding molecular formula?
user
C22H39N7O7
assistant