You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule (2S)-2-[(1,1-dioxo-1,2-benzothiazol-3-ylidene)amino]-3-methyl-N-(5-phenyl-1,3,4-thiadiazol-2-yl)butanamide ?
user
C20H19N5O3S2
assistant