Using CN1C(=O)C2(COc3cc4c(cc32)OCO4)c2c(-c3ccoc3)cccc21 to produce CN1C(=O)C2(COc3cc4c(cc32)OCO4)c2c(C3CCOC3)cccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.