807654-94-0 Furo[2'',3'':1',5']cyclopenta[1',2':4,5]furo[2,3-d][1,3]dioxole,2,5a,6a,9a-tetrahydro-8,8-dimethyl-, (5aR,6aR,9aR,9bR)- 872038-81-8 Pyrimido[5,4:4,5]furo[2,3:4,5]cyclohepta[1,2:4,5]pyrrolo[2,3-d]pyrimidinium, 2,3,4,7,8,9,10,13-octahydro-1,3,8,10-tetramethyl-2,4,7,9-tetraoxo-13-phenyl- 872038-86-3 2H-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- 872038-92-1 Pyrimido[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-