InChI=1S/C18H19NO5/c1-23-15-10-12(4-7-14(15)21)16-17(24-16)18(22)19-9-8-11-2-5-13(20)6-3-11/h2-7,10,16-17,20-21H,8-9H2,1H3,(H,19,22)