You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule prop-2-enyl (4R)-4-(2,3-dimethoxyphenyl)-2-methyl-1,4-dihydropyrimido[1,2-a]benzimidazole-3-carboxylate ?
user
C23H23N3O4
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