1,4-Benzodioxan-2-methanol, 8-isopropyl-5-methyl- and 5-isopropyl-8-methyl-1,4-benzodioxan-2-methanol (1:1) 5(and 8)-Methyl-8(and 5)-isopropyl-1,4-benzodioxan-2-methanol DF3664000