Using CC(C)(COS(C)(=O)=O)COS(C)(=O)=O, CC(C)(C)OC(=O)NNC(=O)OC(C)(C)C to produce CC1(C)CN(C(=O)OC(C)(C)C)N(C(=O)OC(C)(C)C)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.