You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (2S)-N-[(2S)-1-[(3R,3aR,7aS)-3-methyl-7-oxo-6-(2-phenylethyl)-2,3,3a,4,5,7a-hexahydropyrrolo[2,3-c]pyridin-1-yl]-3-methyl-1-oxobutan-2-yl]-2-(methylamino)propanamide into its molecular formula.
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C25H38N4O3
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