You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (5-acetyloxy-15-azatetracyclo[7.7.1.02,7.013,17]heptadeca-2(7),3,5,9(17),10,12-hexaen-6-yl) 2,2-dimethylpropanoate by IUPAC nomenclature, provide its molecular formula.
user
C23H25NO4
assistant