You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named tert-butyl (2S)-2-amino-5-oxo-8-[2-[2-[2-[2-[2-[3-oxo-6-prop-2-ynoxy-5,5-bis(prop-2-ynoxymethyl)hexoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]octanoate by IUPAC nomenclature, provide its molecular formula.
user
C39H63NO13
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