Using O=CC(Br)C=O, Nc1nnc(N2CCN(CCCCOc3ccccc3)CC2)[nH]1 to produce Brc1cnc2nc(N3CCN(CCCCOc4ccccc4)CC3)nn2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.