You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 4-N-(3-chloro-1-methylpyrazol-4-yl)-4-N-[(3S,6R)-3-(oxolan-3-ylsulfamoylamino)-2,3,3a,5,6,6a-hexahydrofuro[3,2-b]furan-6-yl]pyrimidine-2,4-diamine by IUPAC nomenclature, provide its molecular formula.
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C18H25ClN8O5S
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