Using CCOC(C)=O, CC(C)(C)OC(=O)N[C@@H](CNc1ccccc1N)C(=O)O to produce COC(=O)CN1C(=O)[C@@H](NC(=O)OC(C)(C)C)CNc2ccccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.