Using CC(=O)OCCBr, O=c1c2ccccc2c2nc3ccc(O)cn3c2n1-c1ccc([N+](=O)[O-])cc1 to produce CC(=O)OCCOc1ccc2nc3c4ccccc4c(=O)n(-c4ccc([N+](=O)[O-])cc4)c3n2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.