You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named acetyloxymethyl 2-[2-[2-[4-acetyloxy-2-[bis[2-(acetyloxymethoxy)-2-oxoethyl]amino]-5-formylphenoxy]ethoxy]-N-[2-(acetyloxymethoxy)-2-oxoethyl]-4-methylanilino]acetate by IUPAC nomenclature, provide its molecular formula.
user
C38H44N2O21
assistant