InChI=1S/C17H28O7/c1-12(18)4-6-14(19)9-11-17(22)24-13(2)5-7-15(20)8-10-16(21)23-3/h8-15,18-20H,4-7H2,1-3H3/t12-,13-,14+,15+/m1/s1