Using COc1cc2oc(=O)c3c(c2cc1OC)CCN(CCN1CCCCC1)C3 to produce O=c1oc2cc(O)c(O)cc2c2c1CN(CCN1CCCCC1)CC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.