8.4 8.2 8.0 7.8 7.6 7.4 7.2 7.0 6.8 51 -A AG A ATTCTT- 31 e » 0 s • (88 a e # § < i 8 g 0- v • • * 5.4 5.6 5.8 6.0 6.2 8.4 8.2 8.0 7.8 7.6 7.4 7.2 7.0 6.8 ô2 - 1H (ppm) 3.4 3.2 3.0 2.8 2.6 2.4 2.2 2.0 1.8 1.6 1.4 1.2 1.0 ^T6H6 ^T7H6 -T9H6 -T10H6 -C8H6 -G3H8 I—A1H8 A4H8 Ľ-A2H8 NA5H8 i7.0 -7.2 -7.4 -7.6 -7.8 -8.0