You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 2-[[(2R,3S)-2-[(4-chlorophenyl)methyl]-3-[formyl(hydroxy)amino]butanoyl]amino]-N,3,3-trimethylbutanamide .
user
C19H28ClN3O4
assistant