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 4-[[(7S)-7-ethyl-5,7-dimethyl-6-oxo-9-phenyl-8H-pyrimido[4,5-b][1,4]diazepin-2-yl]amino]-3-methoxy-N-[(3R)-piperidin-3-yl]benzamide into molecular formula.
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C30H37N7O3
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