Using O=C1c2ccccc2C(=O)N1CC=CCN1CCN(c2cccc(Cl)c2Cl)CC1 to produce NCC=CCN1CCN(c2cccc(Cl)c2Cl)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.