You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named N-[(Z)-[(4aS,8aR)-3,4,4a,5,6,7,8,8a-octahydro-1H-naphthalen-2-ylidene]amino]-4-propan-2-yloxybenzamide by IUPAC nomenclature, provide its molecular formula.
user
C20H28N2O2
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