You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 5-chloro-4-[[5-chloro-4-(methylamino)pyrimidin-2-yl]amino]-N-(2-hydroxyethyl)-2-methoxy-N-methylbenzamide into its molecular formula.
user
C16H19Cl2N5O3
assistant