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system
Provide the molecular formula for the IUPAC named substance (5R)-5-[(4-bromophenyl)methyl]-7-(3,5-dichlorophenyl)-5-methyl-3-(2-oxo-1,3,2lambda5-dioxaphospholan-2-yl)imidazo[1,2-a]imidazol-6-one .
user
C21H17BrCl2N3O4P
assistant