InChI=1/C13H18O4/c1-8-5-10(11(17-4)6-9(8)2)13(3,16)7-12(14)15/h5-6,16H,7H2,1-4H3,(H,14,15)/p-1/t13-/m1/s1/fC13H17O4/q-1 B6D1CA33F08CFB7D