Using CCOC(=O)N1CCc2ccccc2C1c1ccccc1, OC1CN2CCC1CC2 to produce O=C(OC1CN2CCC1CC2)N1CCc2ccccc2C1c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.