Using CCOC(=O)CC1(c2ccccc2)CC1c1ccc(OCCc2ccc3c(n2)NCCC3)cc1 to produce O=C(O)CC1(c2ccccc2)CC1c1ccc(OCCc2ccc3c(n2)NCCC3)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.