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 (3aS,4R,6aR)-2-(6-methoxypyrimidin-4-yl)-N,N-dimethyl-4-(2-methylphenyl)-1,3,3a,4,6,6a-hexahydropyrrolo[3,4-c]pyrrole-5-carboxamide .
user
C21H27N5O2
assistant