Using O=C(O)CCCc1ccccc1, O=C(OCc1ccccc1)[C@@H]1C[C@@H]2CCC[C@@H]2N1 to produce O=C(OCc1ccccc1)[C@@H]1C[C@@H]2CCC[C@@H]2N1C(=O)CCCc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.