InChI=1S/C15H16O5/c1-8-6-12(18)19-14(8)15(2)7-10(17)13-9(16)4-3-5-11(13)20-15/h3-5,8,14,16H,6-7H2,1-2H3/t8-,14+,15+/m0/s1