Using CCC=O, CCOC(=O)C(Cc1ccc(NC(=O)OC(C)(C)C)nc1)P(=O)(OCC)OCC to produce CCC=C(Cc1ccc(NC(=O)OC(C)(C)C)nc1)C(=O)OCC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.