InChI=1/C21H21NO6/c1-5-27-19(25)14-11(3)16-13-15(21(14,4)20(26)28-16)18(24)22(17(13)23)12-8-6-7-10(2)9-12/h6-9,13,15-16H,5H2,1-4H3/t13-,15+,16-,21+/m0/s1 676D67ABB5D638BB