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 1-O-benzyl 4-O-[2-[[(1S,4S,5R,6R)-6-benzyl-4-methyl-5-(2-methylpropanoyloxy)-2,3,7,8-tetraoxocyclononyl]carbamoyl]-4-methoxypyridin-3-yl] butanedioate is given. What is its corresponding molecular formula?
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C39H40N2O12
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