Using COCc1nnc(Cn2c(=O)n(C3CCN(C(=O)OC(C)(C)C)CC3)c(=O)c3sc(-c4ccccc4)cc32)o1 to produce COCc1nnc(Cn2c(=O)n(C3CCNCC3)c(=O)c3sc(-c4ccccc4)cc32)o1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.