anthocyanin A7 + malonyl-CoA <=> anthocyanin A9 + CoA
anthocyanin a7 + malonyl-coa <=> anthocyanin a9 + coa
anthocyanin A7 + malonyl-CoA <=> anthocyanin A9 + CoA
anthocyanin a7 + malonyl-coa <=> anthocyanin a9 + coa