(3E)-4-(2-hydroxyphenyl)-2-oxobut-3-enoate => 2-hydroxychromene-2-carboxylate
(3e)-4-(2-hydroxyphenyl)-2-oxobut-3-enoate => 2-hydroxychromene-2-carboxylate
(3E)-4-(2-hydroxyphenyl)-2-oxobut-3-enoate => 2-hydroxychromene-2-carboxylate
(3e)-4-(2-hydroxyphenyl)-2-oxobut-3-enoate => 2-hydroxychromene-2-carboxylate