InChI=1/C19H25NO4/c1-5-22-16-6-7-17-14(9-16)8-15(11-23-17)18(21)20-10-13(2)24-19(3,4)12-20/h6-9,13H,5,10-12H2,1-4H3/t13-/m1/s1 AB8A2D00C2BECB59