You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-[5-ethyl-3-[[4-[2-(2H-tetrazol-5-yl)phenyl]phenyl]methyl]-1,3,4-thiadiazol-2-ylidene]-2-methylbenzamide into its molecular formula.
user
C26H23N7OS
assistant