You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (2R)-4-[[2-[[(3S)-3-carboxy-4-(3,5-ditert-butyl-4-hydroxyphenyl)butyl]amino]-2-oxoacetyl]amino]-2-[(3,5-ditert-butyl-4-hydroxyphenyl)methyl]butanoic acid by IUPAC nomenclature, provide its molecular formula.
user
C40H60N2O8
assistant