Using CCCCOc1cc2c(cc1OC)C(Cc1cccc(OC)c1)NC=C2C=O to produce CCCCOc1cc2c(C=O)cnc(Cc3cccc(OC)c3)c2cc1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.