Using CCOC(=O)NNc1nc2ccc(-n3ccnc3)cc2n(OCc2ccccc2)c1=O to produce CCOC(=O)NNc1nc2ccc(-n3ccnc3)cc2n(O)c1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.