Using COCCl, CCCCCCc1ccc(-c2c(C(=O)OCC)nn(C(C)(C)Cc3ccc(C)cc3)c2O)cc1 to produce CCCCCCc1ccc(-c2c(C(=O)OCC)nn(C(C)(C)Cc3ccc(C)cc3)c2OCOC)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.