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 [4-(2-aminoethoxy)phenyl]-[(3R,4R)-3-(6-aminopurin-9-yl)-4-hydroxypyrrolidin-1-yl]methanone .
user
C18H21N7O3
assistant