Using CCOC(=O)C(Oc1ccc(Cn2c(=O)n(C(=O)OCC)c3ccccc32)cc1)c1ccc2c(c1)OCO2 to produce O=C(O)C(Oc1ccc(Cn2c(=O)[nH]c3ccccc32)cc1)c1ccc2c(c1)OCO2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.