You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[3-chloro-6-[(2,2-dimethyl-3a,4,6,6a-tetrahydrofuro[3,4-d][1,3]dioxol-4-yl)-hydroxymethyl]-2-fluorophenyl]ethanol;4-chloro-7H-pyrrolo[2,3-d]pyrimidine is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H24Cl2FN3O5
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