You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (3R)-3-amino-N-[(1R)-6-(ethylaminomethyl)-1,2,3,4-tetrahydronaphthalen-1-yl]-3-phenylpropanamide into molecular formula.
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C22H29N3O
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