Using O=C1Nc2cnc(Cl)nc2N2CCOCC12, CCOC(=O)CI to produce CCOC(=O)CN1C(=O)C2COCCN2c2nc(Cl)ncc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.