3,16-Dimethylbutyryl-4-isobutyrylveracevin hemihydrate Cevane-3,4,12,14,16,17,20-heptol, 4,9-epoxy-, 3,16-bis(2-methylbutanoate) 4-(2-methylpropanoate), hemihydrate FL4910900 Veracevine, 4-isobutyrate 3,16-bis(2-methylbutyrate) hemihydrate