184971-98-0

Trispiro[furan-2(3H),2'-[2H]cyclopenta[b]furan-5'(3'H),12''(2''H)-furo[3'',2'':3',4']cyclopenta[1',2':5,6]naphth[1,2-b]indeno[4,5-i]phenazine-2'',2'''(3'''H)-furan]-11''(1''H)-one,3'a,3''a,4,4',4''',4''b,5,5'',5''',6',6'',6'a,6''a,7'',9'',9''a,9''b,10'',1