Using CCCCc1nc(C=O)c(C(=O)OC)n1Cc1ccc(-c2ccccc2C(=O)OC(C)(C)C)cc1, CC(C)(C)[Mg]Br to produce CCCCc1nc(C(O)C(C)(C)C)c(C(=O)OC)n1Cc1ccc(-c2ccccc2C(=O)OC(C)(C)C)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.