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 11-benzyl-8-[(4-ethylphenyl)methyl]-5-thia-1,8,10,11-tetrazatricyclo[7.3.0.02,6]dodeca-2(6),3,9-triene-7,12-dione .
user
C23H20N4O2S
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