You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance ethyl 6-chloro-2-[[1-(3,5-dichloro-4-fluorophenyl)-2,2,2-trifluoroethyl]carbamoyl]-1H-indole-5-carboxylate .
user
C20H13Cl3F4N2O3
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