InChI=1/C21H26N2O3/c1-3-21-12-16(20(25)26-2)23-15-7-5-4-6-13(15)14-8-10-22(11-9-17(21)24)19(21)18(14)23/h4-7,16-17,19,24H,3,8-12H2,1-2H3/t16-,17-,19-,21-/m1/s eburnamenine-14-carboxylic acid, 14,15-dihydro-17-hydroxy-, methyl ester, (3alpha,14alpha,16alpha,17beta)- methyl (3alpha,14alpha,16alpha,17beta)-17-hydroxy-14,15-dihydroeburnamenine-14-carboxylate