N#S1=NC=CN1
O=C1NC(=O)N1
N#Cc1nc1=O
O=C1CN=CN1
CN1C(=O)N(C)C1=O
CN1C(=O)NC1=O
CC1N=CNC1=O
CCC1N=CNC1=O
O=C(CCl)N1C=CCC1=O
O=C(CCl)N1C=CCC1
O=C(CCl)N1CCCC1
O=C(CCl)N1CCSC1
O=C(CCl)N1CSCO1
O=C(CCl)N1CCCO1
O=C(CCl)N1C=CSC1
O=C(CCl)N1C=CCO1
O=C(CCl)N1C=COC1