cyclo(phenylalanyl-prolyl-sarcosyl-glycyl)
cyclo(phenylalanyl-prolyl-sarcosyl-glycyl) ??
??
cyclo(phenylalanyl-prolyl-sarcosyl-glycyl) C??? ??, ??, ??
cyclo(phenylalanyl-prolyl-sarcosyl-glycyl) ?? ?? ? ???
???
?? ??
cyclo(phenylalanyl-prolyl-sarcosyl-glycyl) ?? ??
???( 0)?? ??