Using COc1ccc2c3c1O[C@H]1C(=O)CC[C@@]4(Cc5ccccc5)[C@@H](C2)N(CC2CC2)CC[C@]314 to produce O=C1CC[C@@]2(Cc3ccccc3)[C@H]3Cc4ccc(O)c5c4[C@@]2(CCN3CC2CC2)[C@H]1O5, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.