Using CC(C)(C)OC(=O)N[C@H](COc1cncc([Sn](C)(C)C)c1)Cc1c[nH]c2ccccc12, O=C1NC(=O)c2c(Br)cccc21 to produce CC(C)(C)OC(=O)N[C@H](COc1cncc(-c2ccc3c(c2)C(=O)NC3=O)c1)Cc1c[nH]c2ccccc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.