You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named 2-[ethyl-[3-[4-[3-(trifluoromethyl)phenyl]butanoylamino]cyclobutyl]amino]acetic acid is given. What is its corresponding molecular formula?
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C19H25F3N2O3
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