InChI=1/C18H26O4/c1-10(15-11(19)6-17(2,3)7-12(15)20)16-13(21)8-18(4,5)9-14(16)22/h10,19,21H,6-9H2,1-5H3/p-2/fC18H24O4/h19,21h/q-2 F389CE1FFDD034BC