You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (1S,6R)-2-[1-(9H-fluoren-9-ylmethoxycarbonylamino)cyclopropanecarbonyl]-2-azabicyclo[4.1.0]heptane-1-carboxylic acid by IUPAC nomenclature, provide its molecular formula.
user
C26H26N2O5
assistant