You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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2-cyclopropyl-2-[(3-methyl-3,4,6,7,8,8a-hexahydro-1H-pyrrolo[1,2-a]pyrazine-2-carbonyl)amino]propanoic acid is the IUPAC name of a molecule. Please give its molecular formula.
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C15H25N3O3
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