Using CCOC(=O)c1cc2cccnc2n(-c2ccc(OC)nc2)c1=O to produce COc1ccc(-n2c(=O)c(C(=O)O)cc3cccnc32)cn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.