You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance spiro[1,2,3,4,4a,4b,5,6,7,8,8a,9a-dodecahydrofluorene-9,9'-1,2,3,4,4a,5,6,7,8,9a-decahydrofluorene]-2-amine .
user
C25H39N
assistant