Using C[Mg+], Cc1ccc(S(=O)(=O)n2c(C=O)c(-c3ccccc3)c3ccccc32)cc1 to produce Cc1ccc(S(=O)(=O)n2c(C(C)O)c(-c3ccccc3)c3ccccc32)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.