You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule N-[2-[2-[3-(methylamino)-3-oxopropoxy]ethoxy]ethyl]-3-(3-methyl-2,5-dioxopyrrolidin-1-yl)propanamide into molecular formula.
user
C16H27N3O6
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