You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2R)-3-(6-chloro-1H-benzimidazol-2-yl)-2-[[2-(5-methyl-2-phenyl-1,3-thiazol-4-yl)acetyl]amino]propanoic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H19ClN4O3S
assistant