You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[9-[(3-chlorophenyl)methyl]-3,9-diazaspiro[5.5]undecan-3-yl]-phenylmethanone;2,2,2-trifluoroacetic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C25H28ClF3N2O3
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