Catalyzes the synthesis of the phenylpropene isoeugenol from coniferyl acetate (PubMed:18208524). Phenylpropenes are the primary constituents of various essential plant oils (PubMed:18208524). They are produced as antimicrobial and antianimal compounds, or as floral attractants of pollinators (PubMed:18208524). Isoeugenol is a characteristic aromatic constituent of spices and a floral volatile compound (PubMed:18208524). acetate + NADP(+) + trans-isoeugenol = (E)-coniferyl acetate + NADPH kcat is 0.99 sec(-1) with coniferyl acetate as substrate. Aromatic compound metabolism; phenylpropanoid biosynthesis. Mostly expressed in petals, and, to a lower extent, in sepals, stamens and pistils. Belongs to the NmrA-type oxidoreductase family.