0 B16R2.41208 CCC1=C(O)C=C2OC(=O)C=C(C)C2=C1 BB52-0413 [1,0,1,0,0,0|0,1,1]=4 1 B18R2.473552 CC(=O)C1=C(O)C(C)=C2OC(=O)C=C(C)C2=C1 BB52-0503 [0,1,1,0,0,0|1,1,0]=4