Using O=Cc1cc2nc(Cl)nc(N3CCOCC3)c2o1, C1CN(C2CNC2)CCO1 to produce Clc1nc(N2CCOCC2)c2oc(CN3CC(N4CCOCC4)C3)cc2n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.