Using C1COCCN1, CCCC(NC(=O)Cc1cc(F)cc(F)c1)C(=O)Nc1nnc(C(C)(C)C=O)s1 to produce CCCC(NC(=O)Cc1cc(F)cc(F)c1)C(=O)Nc1nnc(C(C)(C)CN2CCOCC2)s1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.