You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance methyl (6S)-7-(3,4-dimethoxyphenyl)-6-[(2-methoxyphenyl)methylcarbamoyl]-6-methyl-8-oxo-5H-imidazo[1,5-a]pyrazine-1-carboxylate .
user
C26H28N4O7
assistant