InChI=1S/C20H27N2O3P/c1-16(2)14-19(20(23)21-24)22(15-17-10-6-4-7-11-17)26(3,25)18-12-8-5-9-13-18/h4-13,16,19,24H,14-15H2,1-3H3,(H,21,23)/t19-,26-/m1/s1