You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 2-[4-(azetidin-1-yl)phenyl]-N-benzyl-7-(4-bromo-3-chlorobenzoyl)-3-oxo-6,8-dihydro-5H-imidazo[1,5-a]pyrazine-1-carboxamide .
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C30H27BrClN5O3
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