O=C(Nc1cncc2ccccc12)C1CCCc2ccc(Cl)cc21
O=C(Nc1cncc2ccccc12)C1CCNc2ccc(Cl)cc21
O=C(Nc1cncc2ccccc12)C1(CCC2CC2)CCOc2ccc(Cl)cc21
O=C1N(c2cncc3ccccc23)CCC12CCOc1ccc(Cl)cc12
O=C1N(c2cncc3ccccc23)CCCC12CCOc1ccc(Cl)cc12
Expanding hit by testing role of the oxygen and expanding into P1'.