Using C=CCn1ccnc1NC1C(=O)N2C(C(=O)O)=C(COC(C)=O)CS[C@H]12, Sc1nncs1 to produce C=CCn1ccnc1NC1C(=O)N2C(C(=O)O)=C(CSc3nncs3)CS[C@H]12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.