N-(pentacosanoyl)-hexadecasphing-4-enine-1-phosphocholine 800.677 801.216 C46H93N2O6P CHEBI:138575 InChI=1S/C46H93N2O6P/c1-6-8-10-12-14-16-18-19-20-21-22-23-24-25-26-27-28-30-32-34-36-38-40-46(50)47-44(43-54-55(51,52)53-42-41-48(3,4)5)45(49)39-37-35-33-31-29-17-15-13-11-9-7-2/h37,39,44-45,49H,6-36,38,40-43H2,1-5H3,(H-,47,50,51,52)/b39-37+/t44-,45+/m0/s1 LIPID_MAPS_instance:LMSP03010076 LQSSZIQDYCHSLD-NMIJJABPSA-N SM(d16:1/25:0) [C@]([C@@](/C=C/CCCCCCCCCCC)(O)[H])(NC(=O)CCCCCCCCCCCCCCCCCCCCCCCC)([H])COP(OCC[N+](C)(C)C)([O-])=O chebi_ontology sphingomyelin 41:1