141231-59-6 5-(N-(3-((4-((3-Aminopropyl)amino)butyl)amino)propyl)-L-glutamine)substance P N-Spermine-gln(5)-substance P Spm-SP Substance P, 5-(N-(3-((4-((3-aminopropyl)amino)butyl)amino)propyl)-L-glutamine)- Substance P, N-spermine-gln(5)- Substance P, N-spermine-glutaminyl(5)-