Synonyms: Trispiro[furan-2(3H),2'-[2H]cyclopenta[b]furan-5'(3'H),14''-[1H,14H]indeno[4,5-b]pyrano[3'',4'':2',3']cyclopenta[1',2':5,6]naphtho[1,2-i]phenazine-3''(4''H),2'''(3'''H)-furan]-13'',21''-dione,3'a,4,4',4''',4''a,5,5'',5''',6',6'',6'a,6''a,6''b,7'',8'',8''a,9'',11'',11''a,11''b,12'',14''a,15'',16'',16''a,17'',19'',19''a,19''b,20''-triacontahydro-3''',4',5''-trihydroxy-3',4',4'',4''',5,5,5''',5''',11''a,19''a-decamethyl-,[3''S-[3''a(3'''R*,4'''S*),4''b,4''aa,5''b,6''aa,6''bb,8''aa,11''ab,11''ba,14''b(2'S*,3'R*,3'aR*,4'R*,6'aR*),14''ab,16''aa,19''ab,19''ba,21''aR*]]-; Ritterazine Z;Trispiro[furan-2(3H),2'-[2H]cyclopenta[b]furan-5'(3'H),14''-[1H,14H]indeno[4,5-b]pyrano[3'',4'':2',3']cyclopenta[1',2':5,6]naphtho[1,2-i]phenazine-3''(4''H),2'''(3'''H)-furan]-13'',21''-dione,3'a,4,4',4''',4''a,5,5'',5''',6',6'',6'a,6''a,6''b,7'',8'',8''a,9'',11'',11''a,11''b,12'',14''a,15'',16'',16''a,17'',19'',19''a,19''b,20''-triacontahydro-3''',4',5''-trihydroxy-3',4',4'',4''',5,5,5''',5''',11''a,19''a-decamethyl-,(2R,3''S,3'S,3'''S,3'aS,4'S,4''S,4'''R,4''aR,5'R,5''S,6'aS,6''aS,6''bR,8''aS,11''aS,11''bS