You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named benzyl N-[4-[(3S)-9-(5-tert-butyl-2-methylfuran-3-carbonyl)-2,5-dioxo-1-propyl-1,4,9-triazaspiro[5.5]undecan-3-yl]butyl]carbamate by IUPAC nomenclature, provide its molecular formula.
user
C33H46N4O6
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