You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule ethyl (4S)-4-[2-[2-[2-[(3,5-dichloro-4-ethoxyphenyl)methylidene]hydrazinyl]-2-oxoethoxy]phenyl]-6-methyl-2-sulfanylidene-3,4-dihydro-1H-pyrimidine-5-carboxylate .
user
C25H26Cl2N4O5S
assistant