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 <=> (3e)-4-(2-hydroxyphenyl)-2-oxobut-3-enoate