Pyrimido[5''',4''':4'',5'']furo[2'',3'':4',5']cyclohepta[1',2':4,5]pyrrolo[2,3-d]pyrimidine-2,4,7,9(3H,8H)-tetrone,1,10,12,13-tetrahydro-1,3,8,10-tetramethyl-13-phenyl- (9CI)
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