Using CCOC(=O)c1ccccc1Nc1nc(Nc2ccc3c(c2)CCN(CCOC)CC3)ncc1Cl to produce COCCN1CCc2ccc(Nc3ncc(Cl)c(Nc4ccccc4C(=O)O)n3)cc2CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.