Using C=CCOC(=O)c1cc(C(=O)OCc2ccccc2)c2ccccn12 to produce O=C(OCc1ccccc1)c1cc(C(=O)O)n2ccccc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.