2,3,6,7-tetramethyl-1,4,4a,5,8,8a,9,9a,10,10a-decahydroanthracene-9,10-diol 9,10-anthracenediol, 1,4,4a,5,8,8a,9,9a,10,10a-decahydro-2,3,6,7-tetramethyl- InChI=1/C18H28O2/c1-9-5-13-14(6-10(9)2)18(20)16-8-12(4)11(3)7-15(16)17(13)19/h13-20H,5-8H2,1-4H3/t13?,14?,15?,16?,17-,18