InChI=1/C19H30NO6P/c1-2-12-23-15-17-14-19(8-6-7-18(19)26-17)16-25-27(21,22)24-13-11-20-9-4-3-5-10-20/h3-5,9-10,17-18H,2,6-8,11-16H2,1H3/t17-,18?,19-/m0/s pyridinium, 1-[2-[[[[(2S,3aS)-hexahydro-2-(propoxymethyl)-3aH-cyclopenta[b]furan-3a-yl]methoxy]hydroxyphosphinyl]oxy]ethyl]-, inner salt