You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[2-[4-[1-(furan-3-ylmethyl)pyrrolo[2,3-b]pyridin-3-yl]piperidin-1-yl]ethoxy]-4-methoxybenzoic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C27H29N3O5
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