0  B10R1.17  CNCCC1=NC=CC=C1 EX-A921 [0,0,0,0,0,0|3,0,0]=3
1  B10R2.7  C1=CC2=C(C=C1)NN=C2 EX-A1916 [1,0,0,1,0,0|2,0,0]=4