Using CCOC(=O)c1cnn2c1c(Cl)nc1c(C)nn(C)c12, CC[O-] to produce CCOC(=O)c1cnn2c1c(OCC)nc1c(C)nn(C)c12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.