Using COC(=O)c1c(CNc2ccc3ccn(CC(=O)OC(C)(C)C)c3c2)n(C)c2cccc(Cl)c12 to produce Cn1c2c(c3c(Cl)cccc31)C(=O)N(c1ccc3ccn(CC(=O)OC(C)(C)C)c3c1)C2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.