You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance N-[9-[(1R,4S)-7-[2-cyanoethoxy-[di(propan-2-yl)amino]phosphanyl]oxy-1-methyl-2,5-dioxabicyclo[2.2.1]heptan-3-yl]purin-6-yl]benzamide .
user
C27H34N7O5P
assistant