Using Cn1c(=O)[nH]c(=O)c2c1ncn2Cc1ccccc1, COCCOCCl to produce COCCOCn1c(=O)c2c(ncn2Cc2ccccc2)n(C)c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.