InChI=1S/C19H28O4/c1-10-13-14-15(19(13,6)9-7-8-18(14,4)5)17(23-12(3)21)16(10)22-11(2)20/h13-17H,1,7-9H2,2-6H3/t13?,14?,15?,16-,17-,19+/m0/s1