Using COC(=O)c1c(-c2ccccc2)c2ccc(OC)cc2c(=O)n1C to produce COc1ccc2c(-c3ccccc3)c(C(=O)O)n(C)c(=O)c2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.