You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule (1S,5R)-3-[(2-phenyl-1,3-oxazol-4-yl)methyl]-3,9-diazabicyclo[3.3.2]decan-10-one into molecular formula.
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C18H21N3O2
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