Using COc1ccc2c(=O)n(CCCCN3CC=C(c4ccccc4)CC3)c(=O)[nH]c2c1 to produce O=c1[nH]c2cc(O)ccc2c(=O)n1CCCCN1CC=C(c2ccccc2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.