IUPAC: (3S,3'R,3'aS,4aS,6'S,6aS,6bS,7'aR,9R,11aS,11bS)-3-hydroxy-3',6',10,11b-tetramethyl-1,2,3,3'a,4,4',4a,5,5',6,6',6a,6b,7,7',7'a,8,11,11a,11b-icosahydro-3'H-spiro[cyclohexa[a]fluorene-9,2'-furo[3,2-b]pyridin]-11-one
IUPAC: (3S,3'R,3'aS,4aS,6'S,6aS,6bS,7'aR,9R,11aS,11bS)-3-hydroxy-3',6',10,11b-tetramethyl-1,2,3,3'a,4,4',4a,5,5',6,6',6a,6b,7,7',7'a,8,11,11a,11b-icosahydro-3'H-spiro[cyclohexa[a]fluorene-9,2'-furo[3,2-b]pyridin]-11-one