Using CCOC(=O)C(C)P(=O)(OCC)OCC, OCc1nnc(-c2ccncc2)n1C1CC1 to produce CCOC(=O)C(C)=Cc1nnc(-c2ccncc2)n1C1CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.