You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
tert-butyl N-[3-hydroxy-1-[[(2S)-1-hydroxy-3-methylpentan-2-yl]amino]-6-methyl-1-oxoheptan-4-yl]carbamate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H38N2O5
assistant