(E)-2,4-dihydroxycinnamoyl-CoA <=> umbelliferone + CoA
(e)-2,4-dihydroxycinnamoyl-coa <=> umbelliferone + coa
(E)-2,4-dihydroxycinnamoyl-CoA <=> umbelliferone + CoA
(e)-2,4-dihydroxycinnamoyl-coa <=> umbelliferone + coa