You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as 2-methoxy-N-[2-(4-methoxyphenyl)ethyl]-6-(5-methylthiophen-2-yl)pyrimidin-4-amine using the IUPAC nomenclature.
user
C19H21N3O2S
assistant