Using Cn1ccc(CN)n1, O=C(O)CN1CCC(c2ccccc2)(c2ccccc2)C1=O to produce Cn1ccc(CNC(=O)CN2CCC(c3ccccc3)(c3ccccc3)C2=O)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.