Using C=Cc1cc2c3ccncc3c(=O)n(C)c2cc1OC[C@H](CC(C)C)NC(=O)OC(C)(C)C to produce CCc1cc2c3ccncc3c(=O)n(C)c2cc1OC[C@H](CC(C)C)NC(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.