Using O=C1CCN(c2nc(Cl)nc3c2CCC3c2ccccc2)C1, OCCO to produce Clc1nc2c(c(N3CCC4(C3)OCCO4)n1)CCC2c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.