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 [3-(2-amino-4a,5,7,7a-tetrahydro-4H-furo[3,4-e][1,3]oxazin-4-yl)phenyl]azanide into molecular formula.
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C12H14N3O2-
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