Using C1COCCN1, Cc1ccccc1-n1nc2c3ccccc3n(Cc3ccc(Br)nc3)nc-2c1=O to produce Cc1ccccc1-n1nc2c3ccccc3n(Cc3ccc(N4CCOCC4)nc3)nc-2c1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.