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 2-(5,7-dihydropyrrolo[3,4-b]pyridin-6-ylmethyl)-7-methoxy-[1,2,4]triazolo[1,5-c]quinazolin-5-amine into molecular formula.
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C18H17N7O
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