ID1,X1
frag_0,c1ccccc1
frag_1,c1ccc2ncncc2c1
frag_2,c1cncnc1
frag_3,C=CC=O
frag_4,CN1CCNCC1
frag_5,C1COCCN1
frag_6,C1CCNCC1
frag_7,c1ncc2cc[nH]c2n1
frag_8,N#CCC=O
frag_9,Oc1ccccc1O