InChI=1S/C18H28O6/c1-3-5-6-12-16(20)23-15-11-8-7-10-13(19)17(21)14(9-4-2)24-18(15)22/h3,5-6,12-15,17,19,21H,4,7-11H2,1-2H3/b5-3+,12-6+