Using CCOC(C)([O-])[O-], COc1ccc2nc(NN)nc(-c3ccccc3)c2c1 to produce COc1ccc2c(c1)c(-c1ccccc1)nc1nnc(C)n12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.