InChI=1/C15H19NO5/c1-10(2)15(21)16(8-7-13(17)18)12-5-3-11(4-6-12)9-14(19)20/h3-6,10H,7-9H2,1-2H3,(H,17,18)(H,19,20)/p-2/fC15H17NO5/q-2 2F5DEFB7B501E6BD