Using COC(CNC(=O)CCCC[C@@H]1SC[C@@H]2NC(=O)N[C@@H]21)OC to produce O=CCNC(=O)CCCC[C@@H]1SC[C@@H]2NC(=O)N[C@@H]21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.