You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-cyclopropyl-6-N-ethyl-5-methyl-4-N-(1,3-thiazol-5-ylmethyl)pyrimidine-4,6-diamine is the IUPAC name of a molecule. Please give its molecular formula.
user
C14H19N5S
assistant