You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 4-[2-[2-(5-chlorothiophen-2-yl)ethynyl]-6-(propan-2-ylamino)purin-9-yl]-2,3-dihydroxy-N-methylbicyclo[3.1.0]hexane-1-carboxamide by IUPAC nomenclature, provide its molecular formula.
user
C22H23ClN6O3S
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