3,16-Diisovaleryl-4-isobutyrylveracevin hemihydrate Cevane-3,4,12,14,16,17,20-heptol, 4,9-epoxy-, 3,16-bis(3-methylbutanoate) 4-(2-methylbutanoate), hemihydrate FL5910800 Veracevine, isobutyrate diisovalerate hemihydrate