InChI=1S/C17H22O6/c1-8-6-11(18)9(2)12(7-8)23-16-14(20)10(3)13(19)15(21)17(16,4)22-5/h6-7,15-16,18-19,21H,1-5H3/t15-,16+,17+/m0/s1