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 7-[2-cyclopropyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)acetyl]-7-azabicyclo[2.2.1]heptane-1-carboxylic acid ?
user
C27H28N2O5
assistant