You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named 2-amino-9-[3-[[(2R)-5-(6-aminopurin-9-yl)-2-ethynyloxolan-2-yl]methoxy-hydroxyphosphinothioyl]oxy-5-(dihydroxyphosphinothioyloxymethyl)oxolan-2-yl]-1H-purin-6-one is given. What is its corresponding molecular formula?
user
C22H26N10O9P2S2
assistant