You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule (2S)-N-[(1S)-1-carboxy-2-(1H-indol-3-yl)ethyl]-2-[[ethoxy(hydroxy)phosphoryl]methyl]-4-methylpentanimidate ?
user
C20H28N2O6P-
assistant