L-Aspartic acid,glycyl-L-tyrosyl-L-a-glutamylglycyl-L-tyrosyl-L-a-glutamylglycyl-L-tyrosyl-L-a-glutamylglycyl-L-tyrosyl-L-a-glutamylglycyl-L-tyrosyl-L-a-glutamylglycyl-L-tyrosyl-