1,4,7,10-Tetraoxa-13-azacyclopentadecane, 13-dodecyl-, 13-oxide 129117-50-6 13-Dodecyl-1,4,7,10-tetraoxa-13-azacyclopentadecane 13-oxide Dma-15-cno N-Dodecylmonoaza-15-crown-5-N-oxide