Using C1COCCN1, CCN1CC(C(=O)O)Cc2cccc(CSc3nc4ccccc4[nH]3)c21 to produce CCN1CC(C(=O)N2CCOCC2)Cc2cccc(CSc3nc4ccccc4[nH]3)c21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.