You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2-[(2,6-dichlorophenyl)methyl-[3-(3,4-diethoxyphenyl)propanoyl]amino]-N-propan-2-ylbutanamide by IUPAC nomenclature, provide its molecular formula.
user
C27H36Cl2N2O4
assistant