You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named (2S)-2-[[4-formyloxy-3-(3-hydroxy-6-oxoxanthen-9-yl)phenyl]iminocarbamoylamino]pentanedioic acid by IUPAC nomenclature, provide its molecular formula.
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C26H19N3O10
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