Using O=C1c2ccccc2C(=O)N1OCCCBr, COC(=O)c1ccc(O)cc1O to produce COC(=O)c1ccc(OCCCON2C(=O)c3ccccc3C2=O)cc1O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.