You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 3-(4-chlorophenyl)-11-(4-nitrophenyl)-4,5,7,11-tetrazatricyclo[7.3.0.02,6]dodeca-1(9),2,5,7-tetraene-10,12-dione .
user
C20H10ClN5O4
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