Using O=Cc1ccc(-c2cccc3cncn23)cc1, CCOC(=O)C(C)P(=O)(OCC)OCC to produce CCOC(=O)C(C)=Cc1ccc(-c2cccc3cncn23)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.