You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 4-[2-[2,6-bis[[(8E)-8-ethylidene-2-methoxy-11-oxo-7,9-dihydro-6aH-pyrrolo[2,1-c][1,4]benzodiazepin-3-yl]oxymethyl]pyridin-4-yl]oxyethyl-[3-[2-[2-(2-methoxyethoxy)ethoxy]ethoxy]propanoyl]amino]butanoic acid by IUPAC nomenclature, provide its molecular formula.
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C53H66N6O14
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