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 2-(3-chloro-4-ethoxyphenyl)-5-(2,3,4-trimethoxyphenyl)-5,10b-dihydro-1H-pyrazolo[1,5-c][1,3]benzoxazine ?
user
C27H27ClN2O5
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