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 2-[[4-[[8-[[1-[[1-[2-[[4-[4-[2-[bis(carboxymethyl)amino]-3-[4-(carboxymethyl)-7-(2-methoxy-2-oxoethyl)-1,4,7-triazonan-1-yl]propyl]anilino]-4-oxobutanoyl]amino]ethylamino]-1-oxo-3-phenylpropan-2-yl]amino]-1-oxo-3-phenylpropan-2-yl]amino]-8-oxooctyl]amino]-1-carboxy-4-oxobutyl]carbamoylamino]pentanedioic acid is given. What is its corresponding molecular formula?
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C67H94N12O21
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