You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule (5S,10bS)-9-bromo-5-(3,4-dimethoxyphenyl)-2-(furan-2-yl)-5,10b-dihydro-1H-pyrazolo[1,5-c][1,3]benzoxazine ?
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C22H19BrN2O4
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