(6E)-8-(4-hydroxy-6-methoxy-7-methyl-3-oxo-1,3-dihydro-2-benzofuran-5-yl)-(3R)-hydroxy-2,6-dimethyloct-6-enoyl-CoA = (2E,6E)-8-(4-hydroxy-6-methoxy-7-methyl-3-oxo-1,3-dihydro-2-benzofuran-5-yl)-2,6-dimethylocta-2,6-dienoyl-CoA + H2O — reaction