Using COc1ccc(Cn2c(=O)oc(=O)c3cccnc32)cc1, CCOC(=O)CC(=O)OCC to produce CCOC(=O)c1c(O)c2cccnc2n(Cc2ccc(OC)cc2)c1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.