Using COC(=O)C1(c2ccc(C(=O)O)cc2)CC1, Nc1cc(N2CCOCC2)n2nccc2n1 to produce COC(=O)C1(c2ccc(C(=O)Nc3cc(N4CCOCC4)n4nccc4n3)cc2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.