Using COc1ccc2ncc3c(c2c1)CC([C@H]1CC[C@H](NC(=O)OC(C)(C)C)CC1)CO3 to produce N[C@H]1CC[C@H](C2COc3cnc4ccc(O)cc4c3C2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.