pyrimidine,dihydro,furo[2,3-d]
Furo[2,3-d]
872038-92-1Pyrimido[5''',4''':4'',5'']pyrrolo[3'',2'':5',6']cyclohepta[1',2':4,5]furo[2,3-d]pyrimidine-2,4,8,10(1H,3H,5H,6H)-tetrone,7,9-dihydro-1,3,7,9-tetramethyl-6-phenyl-
872038-86-32H-Cyclohepta[4,5]furo[2,3-d]pyrimidine-2,4(3H)-dione, 1,7-dihydro-1,3-dimethyl-7-[1,2,3,4-tetrahydro-1,3-dimethyl-2,4-dioxo-6-(phenylamino)-5-