Using Cn1cc(CN2CCNCC2)c2ccccc21, O=Cc1ccc(OCCBr)cc1 to produce Cn1cc(CN2CCN(CCOc3ccc(C=O)cc3)CC2)c2ccccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.