Using CC(C)Oc1cncc(-c2ccc3[nH]cc(C(=O)O)c3c2)n1, O=C([O-])[O-] to produce COC(=O)c1c[nH]c2ccc(-c3cncc(OC(C)C)n3)cc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.