Synonyms: Veratraman-2,3,6-triol,17,23-epoxy-5,6-dihydro-, (2b,3a,5a,6b,23b)-; Kuroyurinidine;Spiro[9H-benzo[a]fluorene-9,2'(3'H)-furo[3,2-b]pyridine]-2,3,5-triol,1,2,3,3'a,4,4',4a,5,5',6,6',6a,6b,7,7',7'a,8,11,11a,11b-eicosahydro-3',6',10,11b-tetramethyl-,[2S-(2a,3b,4ab,5a,6aa,6bb,9a(3'S*,3'aR*,6'R*,7'aS*),11ab,11ba)]-