Using CC(C)(C)OC(=O)N1CCC2(CC1)CNCCO2, O=C(O)c1csc(-c2ccccc2)n1 to produce CC(C)(C)OC(=O)N1CCC2(CC1)CN(C(=O)c1csc(-c3ccccc3)n1)CCO2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.