InChI=1/C20H20N2O5/c1-19-6-7-20(2,27-19)16-15(19)17(23)22(18(16)24)11-4-5-12(13(8-11)25-3)14-9-21-10-26-14/h4-5,8-10,15-16H,6-7H2,1-3H3/t15-,16+,19+,20-	8510F4EF06CBA353