Using CI, CCCCCN1C(=O)C2(CC(O)c3cc4c(cc32)OCO4)c2ccccc21 to produce CCCCCN1C(=O)C2(CC(OC)c3cc4c(cc32)OCO4)c2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.