Using CC(C)(C)OC(=O)Nc1nc(CC(=O)O)cs1, CCOC(=O)Cc1csc(N)n1 to produce CCOC(=O)Cc1csc(NC(=O)Cc2csc(NC(=O)OC(C)(C)C)n2)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.