Using Cc1nccc(N2CCNCC2)n1, CC(C)(C)OC(=O)N1CCC(C=O)CC1 to produce Cc1nccc(N2CCN(CC3CCN(C(=O)OC(C)(C)C)CC3)CC2)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.