InChI=1S/C12H15NO5/c1-7(14)11(16)13-10(12(17)18)6-8-2-4-9(15)5-3-8/h2-5,7,10,14-15H,6H2,1H3,(H,13,16)(H,17,18)/t7-,10-/m0/s1