Using CC(=O)c1cc2cnc(Nc3ccc(N4CCN(C(=O)OC(C)(C)C)CC4)cn3)nc2n(C2CCCC2)c1=O to produce CC(=O)c1cc2cnc(Nc3ccc(N4CCNCC4)cn3)nc2n(C2CCCC2)c1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.