C), 000.00 (0C), 000.00 (C), 000.00 (CH, C), 000.00 (0C), 000.00 (C=O). MS: *m*/*z* (000 M^+^). Anal. calcd. for C~00~H~00~N~0~O (000): C, 00.00; H, 0.00; N, 00.00. Found: C, 00.00; H, 0.00; N, 00.00%.  *0,0-Dimethyl-0-(0-