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 5-[(3aS,4S,6aR)-2-oxo-1,3,3a,4,6,6a-hexahydrothieno[3,4-b]pyrrol-4-yl]-N-[1-[[2-[[2-[(2-amino-2-oxoethyl)-[(2-methyltetrazol-5-yl)methyl]amino]-2-oxoethyl]-propylamino]-2-oxoethyl]-[(1-methyltriazol-4-yl)methyl]amino]-3-[4-[4-[bis(2-chloroethyl)amino]phenyl]butanoylamino]-1-oxopropan-2-yl]pentanamide is given. What is its corresponding molecular formula?
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C44H65Cl2N15O7S
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