You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2R)-5-(6-amino-2-chloropurin-9-yl)-2-(hydroxymethyl)oxolan-3-ol;azane;1-[2-chloro-9-[(5R)-5-ethyl-4-methyloxolan-2-yl]purin-6-yl]-3,5-diphenylpyridin-4-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C39H41Cl2N11O5
assistant