You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 1-amino-N,N-bis(2-amino-2-oxoethyl)-3-ethoxy-2,2-dimethylcyclobutane-1-carboxamide by IUPAC nomenclature, provide its molecular formula.
user
C13H24N4O4
assistant