"3-[N-(7'-nitrobenz-2'-oxa-1',3'-diazol-4'-yl)amino]propanic acid"
"3-[N-(7'-nitrobenz-2'-oxa-1',3'-diazol-4'-yl)amino]propanic acid"
"3-[N-(7'-nitrobenz-2'-oxa-1',3'-diazol-4'-yl)amino]propanic acid"
"3-[N-(7'-nitrobenz-2'-oxa-1',3'-diazol-4'-yl)amino]propanic acid"