Using Cn1c2c(c3ccc(-n4ccc(CCc5ccccc5)nc4=O)cc31)CN(C(=O)OC(C)(C)C)CCC2 to produce Cn1c2c(c3ccc(-n4ccc(CCc5ccccc5)nc4=O)cc31)CNCCC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.