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system
Name the molecular formula for the molecule established as 2-[8-(carboxymethyl)-4-oxo-2-spiro[1H-2-benzofuran-3,4'-piperidine]-1'-yl-1-oxa-3-azaspiro[4.4]non-2-en-7-yl]acetic acid using the IUPAC nomenclature.
user
C23H26N2O7
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