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 12-(oxan-4-yl)-9-(pyridin-2-ylmethyl)-2-oxa-9,12-diazatricyclo[9.2.1.03,8]tetradeca-3,5,7-trien-10-one .
user
C22H25N3O3
assistant