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 1-[3-[(2-methylpropan-2-yl)oxy]azetidin-1-yl]-2-[3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]ethanone .
user
C21H32BNO4
assistant