You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[3-(3-chloro-4-isocyanophenoxy)-2,2,4,4-tetramethylcyclobutyl]-1-[4-(2-hydroxyethyl)phenyl]ethanone is the IUPAC name of a molecule. Please give its molecular formula.
user
C25H28ClNO3
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