Using CCOC(=O)C1CCC(N(Cc2ccccc2)Cc2ccccc2)CC1 to produce O=C(O)C1CCC(N(Cc2ccccc2)Cc2ccccc2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.