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 3,6-dichloro-2-[3-(dimethylamino)-6-methylidenexanthen-9-yl]-4-[[3-(3-hydroxy-6-oxoxanthen-9-yl)phenyl]methylcarbamoyl]benzoic acid .
user
C44H30Cl2N2O7
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