Using CCOC(=O)N1CCNCC1, CC(C)(C)OC(=O)N[C@@H](CCc1nn[nH]n1)C(=O)O to produce CCOC(=O)N1CCN(C(=O)[C@H](CCc2nn[nH]n2)NC(=O)OC(C)(C)C)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.