[H]/N=C(/N)NCCCCNCc1c(cnc(c1O)C)COP(=O)(O)O PL2 (4-{[(4-{[AMINO(IMINO)METHYL]AMINO}BUTYL)AMINO]METHYL}-5-HYDROXY-6-METHYLPYRIDIN-3-YL)METHYL DIHYDROGEN PHOSPHATE