You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 5-bromo-N-[(E)-[2-(3-imidazol-1-ylpropylcarbamoyl)-3-methyl-6,7-dihydro-5H-1-benzofuran-4-ylidene]amino]pyridine-3-carboxamide by IUPAC nomenclature, provide its molecular formula.
user
C22H23BrN6O3
assistant