46.61
[1]. D E Butler, et al. Amnesia-reversal activity of a series of N-[(disubstituted-amino)alkyl] --oxo-1-pyrrolidineacetamides, including pramiracetam. J Med Chem. 194 May;7(5):64-91.
H-H15-H1-H5
P6-P64-P-P1+P+P1-P+P61+P5-P4+P4-P5+P51+P-P6-P45-P51
GHS5,GHS7
61