obsolete caffeoyl-CoA:delphinidin-3,5,3'-triglucoside 5-O-glucoside-6-O-hydroxycinnamoyltransferase activity (obsolete GO:0102814)
OBSOLETE. Catalysis of the reaction: delphinidin 3,3',5-tri-O-beta-D-glucoside betaine + caffeoyl-CoA = delphinidin 3-O-glucosyl-5-O-(caffeoylglucoside-3'-O-glucoside) + coenzyme A.