Using CC(C)(C)OC(=O)N1CCN(CC(=O)O)CC1, Cc1csc(N)n1 to produce Cc1csc(NC(=O)CN2CCN(C(=O)OC(C)(C)C)CC2)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.