You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named tert-butyl 2-[[2-(4-ethynylphenyl)-2-[heptyl-[2-[(2-methylpropan-2-yl)oxycarbonylamino]-3-phenylpropanoyl]amino]acetyl]amino]-3-phenylpropanoate is given. What is its corresponding molecular formula?
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C44H57N3O6
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