You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 3-(2-ethoxyethylsulfanyl)-N-[[[3-(2-ethoxyethylsulfanyl)-2-methylpropanoyl]amino]methyl]-2-methylpropanamide by IUPAC nomenclature, provide its molecular formula.
user
C17H34N2O4S2
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