Catalysis of the reaction: (1R,9R,10S,11R,12R,19R)-12-ethyl-10,11-dihydroxy-5-methoxy-10-(methoxycarbonyl)-8-methyl-8,16-diazapentacyclononadeca-2(7),3,5,13-tetraen-16-ium + acetyl-CoA = (1R,9R,10S,11R,12R,19R)-11-(acetyloxy)-12-ethyl-10-hydroxy-5-methoxy-10-(methoxycarbonyl)-8-methyl-8,16-diazapentacyclononadeca-2(7),3,5,13-tetraen-16-ium + CoA.
acetyl-CoA-17-O-deacetylvindoline 17-O-acetyltransferase activity