Using CS(=O)(=O)c1ccc(C(CC2CCOCC2)c2ccc(-c3nnc(C=O)s3)[nH]2)cc1, C[Mg]Br to produce CC(O)c1nnc(-c2ccc(C(CC3CCOCC3)c3ccc(S(C)(=O)=O)cc3)[nH]2)s1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.