QU33 9 1 1 HN N -C CA 1 5 HA CA N C CB 2 6 HB CB CA CG 1 1 HD1 CD1 CG NE1 1 1 HD2 CD2 CE2 CG 1 1 HH2 CH2 CE2 CJ2 1 1 HH1 CH1 CJ1 CZ 1 1 HJ2 CJ2 CH2 CJ1 1 1 HJ1 CJ1 CH1 CJ2