Table 2. Hydrogen bond analyses of D^3.32 with JDTic in five OR systems during the whole simulations. All data were produced using the program Gromacs 4.6.5.

Number of hydrogen bonds	D3.32 (occupancy %)
	μ-OR system	δ-OR system	κ-OR system	μ-OR N2.63V	δ-OR K2.63V
1	8.2	8.4	3.4	5.5	11.9
2	68.3	38.0	33.5	35.0	71.1
3	23.3	52.7	63.1	59.3	16.9
4	--a	0.7	--	--	--

^a: the symbol “--” represents no related hydrogen bond interaction.