You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-benzyl-2-bromo-N-(1-methylpyrazol-3-yl)furo[3,2-b]pyrrole-5-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C18H15BrN4O2
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