Using O=C(O)CCCN1C(=O)CCC(=O)c2ccccc21, CCN1CCNCC1 to produce CCN1CCN(C(=O)CCCN2C(=O)CCC(=O)c3ccccc32)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.