3-CARBOXAMIDO-1,3,5(10)-ESTRATRIEN-17(R)-SPIRO-2′(5′,5′-DIMETHYL-6′OXO)TETRAHYDROPYRAN

(8R,9S,13S,14S,17R)-5′,5′,13-Trimethyl-6′-oxo-3′,4′,5′,6,6′,7,8,9,11,12,13,14,15,16-tetradecahydrospiro[cyclopenta[a]phenanthrene-17,2′-pyran]-3-carboxamide

3-CARBOXAMIDO-1,3,5(10)-ESTRATRIEN-17(R)-SPIRO-2′(5′,5′-DIMETHYL-6′OXO)TETRAHYDROPYRAN

Spiro[17H-cyclopenta[a]phenanthrene-17,2′-[2H]pyran]-3-carboxamide, 3′,4′,5′,6,6′,7,8,9,11,12,13,14,15,16-tetradecahydro-5′,5′,13-trimethyl-6′-oxo-, (8R,9S,13S,14S,17R)-

(1′S,2R,10′R,11′S,15′S)-5,5,15′-trimethyl-6-oxospiro[oxane-2,14′-tetracyclo[8.7.0.02,7.011,15]heptadecane]-2′,4′,6′-triene-5′-carboxamide