N-(eicosanoyl)-hexadecasphing-4-enine-1-phosphocholine 730.599 731.083 C41H83N2O6P CHEBI:138572 CYAOJEYKBPRRNW-YJFXYUILSA-N InChI=1S/C41H83N2O6P/c1-6-8-10-12-14-16-18-19-20-21-22-23-25-27-29-31-33-35-41(45)42-39(38-49-50(46,47)48-37-36-43(3,4)5)40(44)34-32-30-28-26-24-17-15-13-11-9-7-2/h32,34,39-40,44H,6-31,33,35-38H2,1-5H3,(H-,42,45,46,47)/b34-32+/t39-,40+/m0/s1 LIPID_MAPS_instance:LMSP03010052 SM(d16:1/20:0) [C@]([C@@](/C=C/CCCCCCCCCCC)(O)[H])(NC(=O)CCCCCCCCCCCCCCCCCCC)([H])COP(OCC[N+](C)(C)C)([O-])=O chebi_ontology sphingomyelin 36:1