Using CCOC(=O)C1CC(n2c(=O)c3c(C)onc3c3c(Cl)cccc32)CN(C(=O)OC(C)(C)C)C1 to produce Cc1onc2c1c(=O)n(C1CC(C(=O)O)CN(C(=O)OC(C)(C)C)C1)c1cccc(Cl)c21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.