Regarding the stereo layer (b layer), I think it is not taken into account.
InChI=1S/C11H11N5O2/c12-11-15-8(10(18)16-11)6-2-4-14-9(17)7-5(6)1-3-13-7/h1,3,13H,2,4H2,(H,14,17)(H3,12,15,16,18)/b8-6+
AuxInfo=1/1/N:12,5,13,6,11,4,10,3,8,15,1,18,14,7,2,17,9,16/rA:18nCNCCCCNCOCCCCNCONN/rB:s1;s2;d3;s4;s5;s6;s7;d8;s8;s4d10;s11;d12;s10s13;s3;d15;d1s15;s1;/rC:5.7151,-2.9878,0;5.7274,-3.8127,0;4.9467,-4.0793,0;4.7035,-4.8677,0;5.3083,-5.4288,0;5.2466,-6.2515,0;4.565,-6.7163,0;3.7767,-6.4731,0;3.2155,-7.0778,0;3.4753,-5.7051,0;3.8878,-4.9906,0;3.3357,-4.3776,0;2.582,-4.7131,0;2.6683,-5.5336,0;4.4518,-3.4192,0;3.6269,-3.4316,0;4.9267,-2.7446,0;6.3752,-2.493,0;
and
InChI=1S/C11H11N5O2/c12-11-15-8(10(18)16-11)6-2-4-14-9(17)7-5(6)1-3-13-7/h1,3,13H,2,4H2,(H,14,17)(H3,12,15,16,18)/b8-6-
AuxInfo=1/1/N:15,5,16,4,14,6,18,7,2,12,9,10,17,3,8,11,1,13/rA:18nOCNCCCCNCNNCOCCCNC/rB:d1;s2;s3;s4;s5;d6;s7;d8;s9;s9;s7s11;d12;s6;s14;d15;s16;s2d14s17;/rC:.1371,2.6354,0;.3206,1.831,0;1.125,1.6475,0;1.4829,.9042,0;1.125,.1609,0;.3206,-.0227,0;.1371,-.827,0;-.6215,-1.1513,0;-.5476,-1.9729,0;-1.1689,-2.5157,0;.2567,-2.1565,0;.6799,-1.4483,0;1.5015,-1.3744,0;-.3244,.4917,0;-1.109,.2367,0;-1.5939,.9042,0;-1.109,1.5716,0;-.3244,1.3167,0;
return me the same stereoisomer.
Nico