Using O=C(C[C@@H](Cc1ccccc1)C(=O)N1C(=O)OC[C@@H]1Cc1ccccc1)N1CCOCC1, O to produce O=C(O)[C@@H](CC(=O)N1CCOCC1)Cc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.