You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule (2S)-2-[[3-(9H-fluoren-9-ylmethoxycarbonylamino)-2,2-difluoropropanoyl]amino]-3-[(2-methylpropan-2-yl)oxy]propanoic acid ?
user
C25H28F2N2O6
assistant