You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named diethyl (2S)-2-[[(E,4S)-4-[[(2S)-3,3-dimethyl-2-[[(2S)-3-methyl-3-(1-methylindol-3-yl)-2-[methyl-[(2-methylpropan-2-yl)oxycarbonyl]amino]butanoyl]amino]butanoyl]-methylamino]-2,5-dimethylhex-2-enoyl]amino]pentanedioate by IUPAC nomenclature, provide its molecular formula.
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C44H69N5O9
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