You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 6-[(3,4-dimethoxyphenyl)methyl]-2-phenyl-3,5,7,8-tetrahydropyrido[4,3-d]pyrimidin-4-one into molecular formula.
user
C22H23N3O3
assistant