You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2,2-dimethylpropyl (2R)-2-[[[(3S,4R)-5-(2-amino-6-methoxypurin-9-yl)-4-formyl-3-hydroxy-4-methyloxolan-2-yl]methoxy-naphthalen-1-yloxyphosphoryl]amino]propanoate by IUPAC nomenclature, provide its molecular formula.
user
C31H39N6O9P
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