Using CC(=O)OC(C)=O, C=CCCC(CO)(NC(=O)OC(C)(C)C)C(=O)OCC to produce C=CCCC(COC(C)=O)(NC(=O)OC(C)(C)C)C(=O)OCC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.