You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 1-(2-ethoxyethyl)-2-methyl-3-spiro[3,4-dihydrochromene-2,1'-cyclopentane]-4-ylguanidine by IUPAC nomenclature, provide its molecular formula.
user
C19H29N3O2
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