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 tert-butyl N-[1-[[1-(2-ethynylphenyl)-2-oxo-2-(pentylamino)ethyl]-heptylamino]-3-hydroxy-1-oxopropan-2-yl]carbamate .
user
C30H47N3O5
assistant