Using CCOC(=O)C(CCC1c2[nH]c3ccccc3c2CCN1CC)C(=O)OCC to produce CCN1CCc2c([nH]c3ccccc23)C1CCCC(=O)O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.