Using COC(=O)NC1Nc2cc(Oc3ccc(NC(=O)OC(C)(C)C)cc3)cnc2N1 to produce COC(=O)NC1Nc2cc(Oc3ccc(N)cc3)cnc2N1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.