Using COCCBr, O=C(Nc1ccc2cccc(N3CCNCC3)c2c1)c1ccc(Cl)cc1 to produce COCCN1CCN(c2cccc3ccc(NC(=O)c4ccc(Cl)cc4)cc23)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.