You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named benzyl N-[(2S)-4-methyl-1-[[(2S)-4-methyl-1-[[(2R,3R)-2-methyl-6-oxo-2,3-dihydropyran-3-yl]amino]-1-oxopentan-2-yl]amino]-1-oxopentan-2-yl]carbamate by IUPAC nomenclature, provide its molecular formula.
user
C26H37N3O6
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