You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[[2-[(E)-[3-[(3-nitrophenyl)methyl]-2,4-dioxo-1,3-thiazolidin-5-ylidene]methyl]phenoxy]methyl]benzonitrile is the IUPAC name of a molecule. Please give its molecular formula.
user
C25H17N3O5S
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