You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2Z)-N-[2-(4-chlorophenyl)ethyl]-2-[4-[(4-methylphenyl)methyl]-3-oxo-4a,5,6,7,8,8a-hexahydrobenzo[b][1,4]thiazin-2-ylidene]acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C26H29ClN2O2S
assistant