Using CCOC(=O)C1CCCCN1CCCN1c2ccccc2CCc2ccccc21 to produce O=C(O)C1CCCCN1CCCN1c2ccccc2CCc2ccccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.