You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[2-[[4-(2,4-dimethoxyphenyl)-1,3-thiazol-2-yl]amino]-2-oxoethyl] 3-cyclopentylpropanoate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C21H26N2O5S
assistant