Using CCOC(=O)C(C)(C)Oc1ccc(OCCC2CN(Cc3ccc(C)c(C)c3)C(=O)N2)cc1, CI to produce CCOC(=O)C(C)(C)Oc1ccc(OCCC2CN(Cc3ccc(C)c(C)c3)C(=O)N2C)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.