You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[(2S,4R)-1-(9H-fluoren-9-ylmethoxycarbonyl)-4-[(2-methylpropan-2-yl)oxy]pyrrolidin-2-yl]acetic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C25H29NO5
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