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 4-chloro-2-[[(1R,2S)-2-[(9H-fluoren-9-ylmethoxycarbonylamino)methyl]cyclopropanecarbonyl]amino]benzoic acid ?
user
C27H23ClN2O5
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