2 2 5 7 8 pentamethyl 6 chromanol July 8, 2019 16 32 64 128 2 2 5 7 8-pentamethyl-6-hydroxychroman 2 methyl 2 butanol 2 4 5 5 8a-pentamethyl-6 7 8 8a-tetrahydro-5h-chromene
