InChI=1/C15H20O5/c1-4-20-13-6-9(2)11(5-10(13)3)7-12(15(18)19)8-14(16)17/h5-6,12H,4,7-8H2,1-3H3,(H,16,17)(H,18,19)/p-2/t12-/m0/s1/fC15H18O5/q-2 9662B581A9E66CC6