You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(6'-amino-5'-cyano-3',9,11,11-tetramethyl-2-oxospiro[1-azatricyclo[6.3.1.04,12]dodeca-4,6,8(12)-triene-3,4'-2H-pyrano[2,3-c]pyrazole]-6-yl) benzoate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C28H25N5O4
assistant