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 (3S)-N-[(2S)-1-[[(2S)-1-[[(2S)-1-amino-1-oxo-3-phenylpropan-2-yl]-methylamino]-1-oxo-3-phenylpropan-2-yl]-methylamino]-1-oxo-3-phenylpropan-2-yl]-N-methyl-1,2,3,4-tetrahydroisoquinoline-3-carboxamide .
user
C40H45N5O4
assistant