Using O=C1CC(C(=O)Cl)c2ccccc21, CN1CCNC(CN2CCCC2)C1 to produce CN1CCN(C(=O)C2CC(=O)c3ccccc32)C(CN2CCCC2)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.