Using O=C(O)CNCP(=O)(O)O, CC(C)C(=O)OCOC(=O)Cl to produce CC(C)C(=O)OCOC(=O)NCP(=O)(O)OCC(=O)O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.