33215-68-8 (3AS,6R,8R,10S,10AS,10BS,13R,13AR)-6,10,13-TRIHYDROXY-1,1-DIMETHYL-7-METHYLIDENEDODECAHYDRO-5A,8-METHANOCYCLOHEPTA[C]FURO[3,4-E]CHROMEN-5-ONE 156980-53-9 2H,11H-Naphtho[2,1-b]pyrano[3,4-e]pyran-11-one,3-(acetyloxy)-1,3,4,4a,5,6,6a,12,12a,12b-decahydro-4,4,6a,12b-tetramethyl-9-(3-pyridinyl)-,[3S-(3a,4ab,6aa,12ab,12ba)]-