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 (2S,5R,6R)-13-(2-ethoxyanilino)-5-hydroxy-3,7-dioxa-1,10-diazatetracyclo[7.7.0.02,6.011,16]hexadeca-9,11(16),13-triene-12,15-dione into molecular formula.
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C20H19N3O6
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