Using CCOC(=O)CC1Cc2ccc(OCCCN)cc2Cc2ccccc21, Brc1ncccn1 to produce CCOC(=O)CC1Cc2ccc(OCCCNc3ncccn3)cc2Cc2ccccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.