161276-22-8 Spiro[cycloocta[c]furan-5(3H),3'(2'H)-furan]-2',3,6(1H)-trione,9-(acetyloxy)-5'-(3-furanyl)-4,4',5',7,8,9-hexahydro-, [5R-[5a(S*),9a]]- 161300-74-9 (1E,3E,5Z,11E,13E)-9-[(1E)-3-(acetylamino)-1-methylbut-1-en-1-yl]-19-methoxy-3,10,13,20b-tetramethyl-7-oxo-9,10,14a,16a,17,18,19,20,20a,20b-decahydro-7H-naphtho[2,1-h]oxacyclohexadecin-17-yl carbamate