各位大侠，现在急求5,6,7-三甲氧基香豆素的氢谱碳谱图进行对比！所有帮助者均有10枚金币作为酬谢！拜托了！跪求！

(1) Maes, Dominick; Tetrahedron 2008, V64(19), P4438-4443 CAPLUS
(2) Trost, Barry M.; Journal of the American Chemical Society 2003, V125(15), P4518-4526 CAPLUS
(3) Lee, Sanghyun; Archives of Pharmacal Research 2003, V26(11), P902-905 CAPLUS