1 8O0 Hapalindole a 1.000 2 8P6 Hapalindole U 0.958 3 6CU (6as,9r,10r,10as)-9-ethyl-10-isocyano-6,6,9-trimethyl-5,6,6a,7,8,9,10,10a-octahydroindeno[2,1-B]indole 0.808 4 OAU 3-[(1~{S},2~{R},3~{S},6~{S})-3-ethenyl-2-isocyano-3-methyl-6-prop-1-en-2-yl-cyclohexyl]-1~{H}-indole 0.741