c1ccccc1
c1ccncc1
c1ccc2ccccc2c1
c1ccc2ncccc2c1
c1ccc(cc1)c2ccccc2
c1ccc(cc1)c2ccco2
c1ccc(cc1)c2cccs2
c1ccc(cc1)c2ccsc2
C(c1ccccc1)n2ccc3c2cccc3
C(COc1ccc2ccccc2c1)Oc3ccccc3
C(Oc1ccccc1)c2ccccc2
O=C1NC(=S)SC1=Cc2ccccc2
O=C(c1ccccc1)c2ccccc2
O=C(Nc1ccccc1)c2ccccc2
O=C(NCc1ccccc1)c2ccccc2