Using CCOC(=O)Cc1cc(F)c(N2C(=O)c3c(c(OCC)c4ccccc4c3OCC)C2O)c(F)c1 to produce CCOC(=O)Cc1cc(F)c(N2Cc3c(c(OCC)c4ccccc4c3OCC)C2=O)c(F)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.