InChI=1S/C18H30O5/c1-4-12(19)7-5-6-8-13-9-10-18(22-13)11-14-15(23-18)17(2,3)16(20)21-14/h12-15,19H,4-11H2,1-3H3/t12-,13+,14-,15+,18+/m0/s1