You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule (3E)-3-[(4-ethylanilino)methylidene]-1-[(4-methylphenyl)methyl]-2,2-dioxo-2lambda6,1-benzothiazin-4-one ?
user
C25H24N2O3S
assistant