1-Oleoyl-2-stearoylphosphatidylcholine 153188-17-1 17124-89-9 3,5,9-Trioxa-4-phosphaheptacos-18-en-1-aminium, 4-hydroxy-N,N,N-trimethyl-10-oxo-7-((1-oxooctadecyl)oxy)-, inner salt, 4-oxide, (Z)- 7319-55-3 OSPC