You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named [2-[2-morpholin-4-yl-5-(trifluoromethyl)anilino]-2-oxoethyl] (3R,7aS)-7a-methyl-5-oxo-2,3,6,7-tetrahydropyrrolo[2,1-b][1,3]thiazole-3-carboxylate by IUPAC nomenclature, provide its molecular formula.
user
C21H24F3N3O5S
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