Using O=C(O)c1[nH]c2ccccc2c1Nc1ccncc1, CC(=O)OCBr to produce CC(=O)OCOC(=O)c1[nH]c2ccccc2c1Nc1ccncc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.