1 3 5 triazine structure July 8, 2019 16 32 64 128 Hexahydro 1 3 5 trinitro 1 3 5 triazine structure 1 3 5 triazinane 1 3 5-triazine derivatives 1 3 5-triazine 1 3 5-triazine synthesis 1 3 5-triazine-2 4 6-triamine