(19-alpha)-16,17-Didehydro-10-methoxy-19-methyloxayohimban-16-carboxylic acid hydrazide 10-Methoxy raubasinique acide hydrazide [French] 72407-38-6 Oxayohimban-16-carboxylic acid, 16,17-didehydro-10-methoxy-19-methyl-, hydrazide, (19-alpha)-