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system
Provide the molecular formula for the IUPAC named substance ethyl 7-[4-(3-bromo-4-methylidenephosphanylphenyl)-6-(2-methylphenyl)-2-oxo-3,4-dihydro-1H-pyrimidin-5-yl]-4-oxoheptanoate .
user
C27H29BrN2O4P+
assistant