Deoxyharringtonine

(2R)-2-Hydroxy-2-(methoxycarbonyl)methyl-5-methylhexanoic acid (1S,3aR)-1,5,6,8,9,14bβ-hexahydro-2-methoxy-4H-cyclopenta[a][1,3]dioxolo[4,5-h]pyrrolo[2,1-b][3]benzazepin-1-yl ester