You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name N-[(2R)-1-[dimethoxy(oxido)phosphaniumyl]-1-hydroxy-3-phenylpropan-2-yl]-2,4-dimethoxybenzamide ?
user
C20H26NO7P
assistant