Using COCC1COC(=O)O1, CCOC(=O)Nc1ccc(N2CCC(=O)CC2)cc1 to produce COCC1CN(c2ccc(N3CCC(=O)CC3)cc2)C(=O)O1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.