Structure: 1 Energy = -170.9 ± 8.6 Structure: 2 Energy = -174.0 ± 8.3 Structure: 3 Energy = -170.1 ± 8.6 Structure: 4 Energy = -165.7 ± 8.3 Structure: 5 Energy = -168.3 ± 8.6 Structure: 6 Energy = -170.1 ± 8.5 Structure: 7 Energy = -173.5 ± 9.1 Structure: 8 Energy = -166.6 ± 9.1 Structure: 9 Energy = -179.7 ± 8.1 Structure: 10 Energy = -170.7 ± 8.5 Structure: 11 Energy = -175.7 ± 8.5 Structure: 12 Energy = -172.6 ± 8.8 Structure: 13 Energy = -168.7 ± 8.9 Structure: 14 Energy = -160.3 ± 8.2 Structure: 15 Energy = -172.3 ± 8.7 Structure: 16 Energy = -167.9 ± 9.2 Structure: 17 Energy = -173.5 ± 8.3 Structure: 18 Energy = -170.3 ± 9.1 Structure: 19 Energy = -171.6 ± 9.1 Structure: 20 Energy = -174.3 ± 7.7