Suggested Reaction 2.1.1.-

Left

1-Benzopyrylium, 2-(3,4-dihydroxyphenyl)-3,5,7-trihydroxy-, chloride
+S-Adenosyl-L-methionine

Right

3,5,7-Trihydroxy-2-(4-hydroxy-3-methoxyphenyl)-1-benzopyrylium chloride
+S-Adenosyl-L-homocysteine
+H+

[BiSSCat | GREP ]