1 FO4 Sphingomyelin 1.000 2 3XU (4s,7s,23z)-4-hydroxy-7-[(1s,2z)-1-hydroxyhexadec-2-en-1-yl]-N,N,N-trimethyl-9-oxo-3,5-dioxa-8-aza-4-phosphadotriacont- 23-en-1-aminium 4-oxide 1.000 3 A1A8R N-oleoyl-D-erythro-sphingosylphosphorylcholine 0.893 4 Y73 N-[(2r,3r,4e)-1,3-dihydroxyoctadec-4-en-2-yl]tetracosanamide 0.789 5 Z1T N-[(2s,3r,4e)-1,3-dihydroxyoctadec-4-en-2-yl]tetracosanamide 0.789 6 A1LXR Cer(d18:0/20:0) 0.719