InChI=1/C21H24N2O2/c1-3-14-10-13-11-21(20(24)25-2)18-16(8-9-23(12-13)19(14)21)15-6-4-5-7-17(15)22-18/h4-7,10,13,19,22H,3,8-9,11-12H2,1-2H ibogamine-18-carboxylic acid, 3,4-didehydro-, methyl ester methyl 3,4-didehydroibogamine-18-carboxylate