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 2-tert-butyl-6-[(2,6-difluoro-4-methoxyphenyl)methyl]-3,5,7,8-tetrahydropyrido[4,3-d]pyrimidin-4-one .
user
C19H23F2N3O2
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