InChI=1S/C18H26O5/c1-11(2)5-4-6-12(3)7-16-18(10-17(22)23-16)9-14(20)13(19)8-15(18)21/h5,7,13-14,16,19-20H,4,6,8-10H2,1-3H3/b12-7+/t13-,14+,16-,18+/m1/s1