You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (E)-3-[5-(2,4-dichlorophenyl)furan-2-yl]-N-[4-[4-(thiophene-2-carbonyl)piperazin-1-yl]phenyl]prop-2-enamide by IUPAC nomenclature, provide its molecular formula.
user
C28H23Cl2N3O3S
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