0  B6R1.2  O=C1OCCO1 Molport-003-925-305 [1,0,0,0,0,0|1,0,2]=4
1  B9R1.6  CC(=O)C1=COCCO1 Molport-023-247-177 [0,1,0,0,0,1|0,0,2]=4