Diethyl 6(R)-3-(4-chlorophenyl)-6-(tetra-O-acetyl-D-arabino-threitol-1-yl)-1,2,3,6-tetrahydro-1,2,3,4-tetrazine-1,2-dicarboxylate, C26H33ClN4O12

The configurations around the chiral centres C53, C52, C51 and C5 are R, S, R and R, respectively, corresponding to a D-arabino conformation. The tetrahydrotetrazine ring has a conformation close to that of a half-boat. Packing of the molecules is governed by normal van der Waals contacts