You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
tert-butyl N-[1-[[2-(tert-butylamino)-1-(3-methylphenyl)-2-oxoethyl]-pentylamino]-1-oxo-3-sulfanylpropan-2-yl]carbamate is the IUPAC name of a molecule. Please give its molecular formula.
user
C26H43N3O4S
assistant