You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (2S)-2-[[2-[acetyl(propyl)amino]acetyl]amino]-N-[2-[[1-[(2-amino-2-oxoethyl)amino]-3-hydroxy-1-oxopropan-2-yl]amino]-2-oxoethyl]-4-methylpentanamide;ethane;propane by IUPAC nomenclature, provide its molecular formula.
user
C25H50N6O7
assistant