Using CC(C)(C)c1cc(C(=O)O)cc(C(C)(C)C)c1O, CC1(O)CNC1 to produce CC1(O)CN(C(=O)c2cc(C(C)(C)C)c(O)c(C(C)(C)C)c2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.