You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 2-[2-[2-(2-aminoethoxy)ethoxy]ethoxy]ethanol;tert-butyl N-[2-[2-[2-(2-bromoethoxy)ethoxy]ethoxy]ethyl]carbamate ?
user
C21H45BrN2O9
assistant