0 B12R2.196 Cn1cnc2c1ncnc2N CSC011218112 [0,1,0,0,0,0|1,0,2]=4 1 B13R2.1613 CNc1ncnc2c1nccn2 CSC009929778 [0,1,0,0,0,1|0,0,1]=3