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 4-[[4-(2-amino-2-oxoethyl)-1,3-thiazol-2-yl]sulfanyl]-N-[[(2S)-4-[(3,4-dichlorophenyl)methyl]morpholin-2-yl]methyl]butanamide;hydrochloride .
user
C21H27Cl3N4O3S2
assistant