Using CS(=O)CCC(NC(=O)OC(C)(C)C)C(=O)O, CCCCCCCCN to produce CCCCCCCCNC(=O)C(CCS(C)=O)NC(=O)OC(C)(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.