InChI=1S/C17H22O6/c1-11(18)22-10-16(2)7-4-8-17(3,23-16)13-6-5-12(15(20)21)9-14(13)19/h5-6,9,19H,4,7-8,10H2,1-3H3,(H,20,21)/t16-,17+/m1/s1