Using CCN(CC)Cc1cc(-c2ccn3c(-c4ccc(CNC(=O)OC(C)(C)C)cc4)cnc3c2)ccn1 to produce CCN(CC)Cc1cc(-c2ccn3c(-c4ccc(CN)cc4)cnc3c2)ccn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.