Using Nc1ccc2c(c1)OCO2, O=C(c1ccccc1)C(O)c1ccccc1 to produce c1ccc(-c2[nH]c3cc4c(cc3c2-c2ccccc2)OCO4)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.