sinapoylglucose---sinapoylglucose O-sinapoyltransferase; hydroxycinnamoylglucose-hydroxycinnamoylglucose hydroxycinnamoyltransferase; 1-(hydroxycinnamoyl)-glucose:1-(hydroxycinnamoyl)-glucose hydroxycinnamoyltransferase; 1-O-(4-hydroxy-3,5-dimethoxy • • •