You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named 4-[[5-[(2-bromophenoxy)methyl]furan-2-carbonyl]amino]-N,N,1,5-tetramethylpyrazole-3-carboxamide is given. What is its corresponding molecular formula?
user
C20H21BrN4O4
assistant