You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 1-[3-[3-[3-[3-(2,3-dipropoxypropoxy)-2-propoxypropoxy]-2-propoxypropoxy]-2-propoxypropoxy]-2-propoxypropoxy]-2,3-dipropoxypropane by IUPAC nomenclature, provide its molecular formula.
user
C42H86O13
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