You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
tert-butyl N-[(4S)-4-amino-5-[[2-hydroxy-3-[(2-methylpropan-2-yl)oxycarbonylamino]propyl]amino]-5-oxopentyl]carbamate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C18H36N4O6
assistant