Using COC(=O)CCn1ccc(-c2ncccc2COc2cnc(OC)cc2C=O)n1 to produce COc1cc(C=O)c(OCc2cccnc2-c2ccn(CCC(=O)O)n2)cn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.