InChI=1/C21H25FN2O3/c1-3-20-10-12(18(26)27-2)17-21(13-6-4-5-7-14(13)23-17)8-9-24(19(20)21)11-15(25)16(20)22/h4-7,15-16,19,23,25H,3,8-11H2,1-2H aspidospermidine-3-carboxylic acid, 2,3-didehydro-6-fluoro-7-hydroxy-, methyl ester methyl 6-fluoro-7-hydroxy-2,3-didehydroaspidospermidine-3-carboxylate