Using CCOC(=O)c1cccc(CNCC(=O)OC(C)(C)C)n1, O=C(Cl)OCc1ccccc1 to produce CCOC(=O)c1cccc(CN(CC(=O)OC(C)(C)C)C(=O)OCc2ccccc2)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.