Using CCO, Cc1ccc(N2C(=O)c3cc(C)c4oc5ccccc5c4c3C2=O)cc1 to produce Cc1cc2c(c3c1oc1ccccc13)C(=O)OC2=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.