You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-O-[1-[3-[2-[4-(2-hydroxyethoxy)-4-oxobutanoyl]oxypropoxycarbonyloxy]-2,2-dimethylpropoxy]carbonyloxypropan-2-yl] 1-O-(2-hydroxyethyl) butanedioate is the IUPAC name of a molecule. Please give its molecular formula.
user
C25H40O16
assistant