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 11-benzyl-8-oxa-11,12,15-triazapentacyclo[13.7.0.02,7.09,14.016,21]docosa-1(22),2,4,6,9(14),12,16,18,20-nonaen-10-one ?
user
C25H17N3O2
assistant