You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (3R)-8-[(2-chloro-4-fluorophenyl)methylsulfanyl]-3-[[(2-methylpropan-2-yl)oxycarbonylamino]methyl]-1,4-dioxaspiro[4.5]dec-6-ene-7-carboxylate by IUPAC nomenclature, provide its molecular formula.
user
C22H26ClFNO6S-
assistant