You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 7-methoxy-6-[2-[methyl(2-methylsulfonylethyl)amino]ethoxy]-N-(4-phenylmethoxyphenyl)-8H-pyrido[3,4-d]pyrimidin-4-amine .
user
C27H33N5O5S
assistant