Using COc1ccc(Cn2c(=O)c3c(c4cc(OC)ccc42)N(C)CCC3)cc1 to produce COc1ccc2[nH]c(=O)c3c(c2c1)N(C)CCC3, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.