You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 3-[[3,4-dioxo-2-[1-[5-(trifluoromethyl)furan-2-yl]propylamino]cyclobuten-1-yl]amino]-2-hydroxy-N,N-dimethylbenzamide by IUPAC nomenclature, provide its molecular formula.
user
C21H20F3N3O5
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