You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 3-[[4-(methylamino)phenyl]carbamoylamino]-3-[3-[[3-(propylcarbamoylamino)phenyl]sulfonylamino]phenyl]propanoic acid by IUPAC nomenclature, provide its molecular formula.
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C27H32N6O6S
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