Using COc1ccc(OC)c(CNC(=O)c2cc(C34CC5CC(CC(C5)C3)C4)c(O)cc2O)c1 to produce O=C(NCc1cc(O)ccc1O)c1cc(C23CC4CC(CC(C4)C2)C3)c(O)cc1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.